Broke endmill on accidental door open/close

[xiondavis]

accidentally opened the door on my 2006 minimill - feed stopped and rpm drops to 750. Closed the door - the program continued at 100% feed rate before the spindle spun back up to 6k and <$NAP>.

Anyone know how to ensure that the spindle is back up to speed before feed starts on accidental door opening?

I searched and found Parameter 206 to rapid before fully spinning up spindle - I'm not in front of the mill, would turning this off also apply to feed on door stop/start?

I also found parameter for door spindle stop and door spindle RPM. I'd like the spindle and feed to stop when opening the door, but just need spindle to ramp back up to 100% before feed starts.

[Donkey Hotey]

I think it's a setting for percentage of spindle speed before resuming. I'm not in front of the machine but, I seem to remember seeing that somewhere in there.

My solution (because I don't even want to worry about it) is to just press FWD on the spindle direction and give it a chance to come back to full speed before pressing the Cycle Start button again.

[xiondavis]

Well, heres what happens:

1. run program
2. Open door: Feed stops, spindle speed drops to 750 RPM
3. Close door: Feed starts immediately, spindle speed ramps up after feed starts.

If you don't jog away, there is no cycle start button involved - as soon as the door closes, the feed resumes immedately before ramping the spindle back up.

All parameters are factory set - 2006 MiniMill. I tried setting parameter spindle nowait from 1 to 0: It had no effect on door closing, the feed starts immediately.

So nobody else ever has this happen? bumping the door handle causing a quick open/close causes a broken endmill and ruined part? At least i'd like to require a cycle start on door close!

[Donkey Hotey]

Yeah, I'd say that you should call your HFO. There is something not right in your control.

The VF-5 we just bought at work, won't even do a tool change with the door open (even with door hold override turned on). It will start the tool change, then go into Feed Hold, waiting for the doors to close. After they're closed, it still requires a Cycle Start to complete the tool change.

[gpcoe]

Newer controls require a cycle start after the door opens. However, you're still faced with getting the spindle up before it feeds. If you're quick enough to think of it press the feed hold before closing the door. Tap cycle start or turn the feed overide to zero and press cycle start and quickly press the feed hold again. The spindle will accelerate and then you can press the cycle start and continue feeding. However, this still doesn't help the bumped the door open and back closed on accident scenario.

Greg

[Delw]

contact your HFO maybe you can get a software update that will do this, another good reason why haas should tell about software updates

Delw

[xiondavis]

Thanks for your input - I talked to local HFO - recommendation was set parameter "Spindle Stop on Door Open" from 0 to 1. This stops spindle on door open and transforms the door hold to a feed hold on door close.

Only problem is that this is not like a regular feed hold, I can't seem to restart the spindle again using the cw button - have to press cycle start which once again starts feed before spindle, so either I have to use Greg's 0% feed trick above or i have to cancel the program and restart. if this happens again, but at least it will prevent the door bump from ruining a part.

Looks like there is another parameter for MAX spindle speed with door open. I might talk to them about this one - setting it to 6000 might mean it doesn't slow down with door open.

[sti2011]

This may be bringing up a touchy subject but I can't remember being in, or working in, too many shops where the door interlocks worked at all. Never had an installer by-pass an interlock but all were willing to maybe mention how to......

[Geof]

On my 2004 Super MiniMill when the door is opened the spindle stops and the feed stops. When the door is closed the spindle comes up to speed but the feed is on Feed Hold until I push Cycle Start.

[tobyaxis]

Almost every machine I have worked on had a bypassed Door Interlock. The only ones that still had it were HAAS.

The HFO here sets the machine to Feed Hold when the Door is opened while the spindle stays on. You would then have to hit the Cycle Start to resume the program after the door was closed.

[sti2011]

I have never understood how one could properly dry run a job looking through a filthy window, a tiny window, a window in the wrong place etc. I am not by any means saying that this is a safe practice. But I don't find it practical to try to machine a part that can cost thousands of dollars half blind. Nor especially in the case of turning sometimes you really need to see tool interference issues and not always the one workng at the moment. I would be very interested to see a poll on this issue. If I was a betting man and I am, I would say around 80 percent have a dis-abled, or run a dis-abled inter-lock machine. Any takers?

[Delw]

With the tool change arm thats swings at 1 million miles and hour I am glad they did put a door interlock on it.
Mine is always parameter switched to no interloc unless I am not in the shop. lots of people even seasoned machinest are not acustom to that type of tool changer especially new employees that never ran side mounts .

I know it scared the crap out of me a few times,, and I been doing this a log time, just never had a side mount.