I got a tip from Gene H. on a way to use HALScope to watch the spindle
position, and trigger from the spindle stop. It has been a while, so I am
not recalling all the details at the moment.
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
“I predict future happiness for Americans, if they can
Sounds like that bit of Heath Robinson (since you're in the UK) mess was just
to avoid paying royalties to Clarence W. Spicer.
https://www.machineservice.com/products/universal-joints/history-behind-the-universal-joint/
On Wednesday, July 7, 2021, 7:30:05 PM MDT, andy pugh
wrote:
On
Where are you located?
> -Original Message-
> From: Gerrit Visser [mailto:gerr...@psgv.ca]
> Sent: July-07-21 7:18 PM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re: [Emc-users] Power Tapping
>
> I should have added YG-1's Canadian office info: http://yg1.ca/field.asp
>
> I'm
I should have added YG-1's Canadian office info: http://yg1.ca/field.asp
I'm back to practicing drilling and thread milling M6 in 1/2 aluminum plate
on Friday. My shop bult gantry mill/router has its swarf containment system
in place at last.
Gerrit
-Original Message-
From: John
Great story. Impressive repair.
Now I have two more places to visit when travel becomes easy again.
John
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: July-07-21 6:27 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Power Tapping
>
>
On Thu, 8 Jul 2021 at 00:39, John Dammeyer wrote:
> But for metal a spiral, or at least spiral point is a must I think. Time to
> do a bit more tuning but impressed as how well it works.
I power-tapped a bunch of holes into EN24 with a conventional
straight-flute hand tap at the weekend,
Anyway, I reverse engineered it and here's the schematic.
There's one serious issue with it and that's the pull up resistor pack on the
extra 4 outputs. That results in the relay being energized when nothing is
connected to the parallel port or if the application isn't running.
If I got the
I've successfully used metric (M4) spiral point YG-1 taps from Amazon.ca.
-Original Message-
From: John Dammeyer
Sent: July 7, 2021 8:52 PM
To: 'Enhanced Machine Controller (EMC)'
Subject: Re: [Emc-users] Power Tapping
Well in that case it's cheaper than the Swiss one. What I have
Well in that case it's cheaper than the Swiss one. What I have found so far is
that the cheap metric tap+die+handle was fine for the occasional hole but
really garbage for anything else. I'm definitely headed in the direction that
the quality of the threaded hole is directly due to the
Thanks
So how did you work out how far it overshoots?
John
> From: jrmitchellj [mailto:jrmitche...@gmail.com]
> Spiral flute taps for blind holes.
> Spiral point taps for through holes.
> For aluminum, I use uncoated, or bright HSS taps.
>
> I have been doing alot of m2 & 4-40 holes with rigid
YG-1 is hardly no-name.
https://www.yg1.kr/main.asp
Gerrit
-Original Message-
From: John Dammeyer
Sent: July 7, 2021 7:37 PM
To: 'Enhanced Machine Controller (EMC)'
Subject: Re: [Emc-users] Power Tapping
It's an Amazon Prime product so shipping is free but yes, in Canadian $
Spiral flute taps for blind holes.
Spiral point taps for through holes.
For aluminum, I use uncoated, or bright HSS taps.
I have been doing alot of m2 & 4-40 holes with rigid mounted taps, none
broken! All blind holes.
The difficult part is figuring out how far the spindle overshoots
(rotation)
Wow. I now remember watching that video before. That was part of the
incentive to be able to do power tapping. Very impressive. But still scary.
Not sure how to peck tap. In playing though I did move away and then rerun on
the same hole a few times. It didn't muck up the thread.
Question
I just use whatever I have... Sometimes I peck tap when I am using a hand
tap. A good spiral tap or one the shoots the shavings out the end (don't
remember what they are called)
Like this one..
(you catch the shavings coming out the bottom..)
https://youtu.be/E2t0y2EsSO8?t=483
You get used
It's an Amazon Prime product so shipping is free but yes, in Canadian $ half
the price of the Swiss one and probably should be 1/4 the price since it's no
name.
Having said all that. With just a normal tap (I had to try) here is the result
into MDF.
Scary to watch it do this. I really
Thanks. Even have some of that kicking around. And MDF.
John
> From: ken.stra...@gmail.com [mailto:ken.stra...@gmail.com]
>
> Delrin is more forgiving than aluminum and machinable wax is even more so.
> At $10-20 per tap it is something to consider when testing.
>
> -Original Message-
On Wed, 7 Jul 2021 at 23:09, John Dammeyer wrote:
>
> As I get closer to being able to try power tapping I'm wondering if this sort
> of tap is suitable?
> https://www.amazon.ca/gp/product/B00F8T55GC/ref=ox_sc_act_title_3
It looks expensive for a no-name tool.
Delrin is more forgiving than aluminum and machinable wax is even more so.
At $10-20 per tap it is something to consider when testing.
-Original Message-
From: John Dammeyer
Sent: July 7, 2021 6:06 PM
To: Enhanced Machine Controller (EMC)
Subject: [Emc-users] Power Tapping
As I get
Thanks John,
There will be lots of 'first test runs'.
At the moment I'm still running the AC Servo with PWM mostly because I've been
trying to learn a bit more about HAL PID programming. The pulleys from motor
to spindle are V Belt and not quite the same size so once I switch over to
Maybe drill your hole oversize for the first test run so it doesn't have to
cut much.
John Figie
On Wed, Jul 7, 2021 at 5:09 PM John Dammeyer wrote:
> As I get closer to being able to try power tapping I'm wondering if this
> sort of tap is suitable?
>
As I get closer to being able to try power tapping I'm wondering if this sort
of tap is suitable?
https://www.amazon.ca/gp/product/B00F8T55GC/ref=ox_sc_act_title_3
Or is it garbage that will break in aluminium castings or mild steel on the
first try?
I'm at the point with encoder feedback
On Wed, 7 Jul 2021, andy pugh wrote:
Date: Wed, 7 Jul 2021 15:25:37 +0100
From: andy pugh
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] spindle orientation help for a 7i77 card looking for
configs to study
On Wed, 7
On Wed, 7 Jul 2021 at 15:20, Peter C. Wallace wrote:
> Also some NPN prox's have built in pullups so may source 24V to the
> output when off.
Would a 5.2V zener at the terminal block be a sensible precaution?
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for
On Thu, 8 Jul 2021, andrew beck wrote:
Date: Thu, 8 Jul 2021 01:47:18 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] spindle orientation help for a 7i77 card looking for
configs to study
Hey I do
On Wed, 7 Jul 2021 at 14:50, andrew beck wrote:
>
> Hey I do have npn proxy switches. They run on 6v how do I power Them
> though?
Definitely wait for the go-ahead from PCW on this one, but I think
that it is safe to wire pulled-up 5V inputs to the output of an NPN
prox that is powered from 24V
Hey I do have npn proxy switches. They run on 6v how do I power Them
though?
Can I use 24v field io?
On Thu, Jul 8, 2021, 1:40 AM Peter C. Wallace wrote:
> On Thu, 8 Jul 2021, andrew beck wrote:
>
> > Date: Thu, 8 Jul 2021 01:34:02 +1200
> > From: andrew beck
> > Reply-To: "Enhanced Machine
On Thu, 8 Jul 2021, andrew beck wrote:
Date: Thu, 8 Jul 2021 01:34:02 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] spindle orientation help for a 7i77 card looking for
configs to study
Also
On Wed, 7 Jul 2021 at 14:36, andrew beck wrote:
>
> Also when you say Pull down resistor can I just solder that between the pnp
> prox output wire and the encoder input?
Is an NPN an option? (wouldn't need to be specifically a low voltage
one, I don't think)
--
atp
"A motorcycle is a bicycle
On Wed, 7 Jul 2021 at 14:15, Peter C. Wallace wrote:
> The encoder inputs have a 2K pullup resistor to 5V
At the point where I said "I am not PCW" that should be interpreted to
mean "ignore everything that I am about to say" :-)
I wasn't aware that the encoder pins were different, other than
Also when you say Pull down resistor can I just solder that between the pnp
prox output wire and the encoder input?
On Thu, Jul 8, 2021, 1:27 AM andrew beck wrote:
> Looks like I bought the wrong type of switch then lol.
>
> Do you think I'll lose accuracy with a resistor?
>
>
> Remember this
Looks like I bought the wrong type of switch then lol.
Do you think I'll lose accuracy with a resistor?
Remember this is my index pulse for spindle..
On Thu, Jul 8, 2021, 1:15 AM Peter C. Wallace wrote:
> On Wed, 7 Jul 2021, andrew beck wrote:
>
> > Date: Wed, 7 Jul 2021 20:47:35 +1200
> >
On Wed, 7 Jul 2021, andrew beck wrote:
Date: Wed, 7 Jul 2021 20:47:35 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] spindle orientation help for a 7i77 card looking for
configs to study
peter
Awesome I'll power up tomorrow and try it out
On Wed, Jul 7, 2021, 10:22 PM andy pugh wrote:
> On Wed, 7 Jul 2021 at 10:58, andrew beck wrote:
>
> > Yep it's definitely 5v pnp I got them special from the manufacturer.
> > So can I just power it from 5v and 0v. And then the sensor output goes
On Wed, 7 Jul 2021 at 10:58, andrew beck wrote:
> Yep it's definitely 5v pnp I got them special from the manufacturer.
> So can I just power it from 5v and 0v. And then the sensor output goes into
> the 7i77 spindle z index input?
Yes, that should work fine.
--
atp
"A motorcycle is a bicycle
Thanks Andy!
Yep it's definitely 5v pnp I got them special from the manufacturer.
So can I just power it from 5v and 0v. And then the sensor output goes into
the 7i77 spindle z index input?
(Jumpered for single ended inputs of course)
On Wed, Jul 7, 2021, 9:51 PM andy pugh wrote:
> On
On Wed, 7 Jul 2021 at 09:51, andrew beck wrote:
> PCW can I use a 5v pnp sensor straight into the 7i77 encoder input same as
> I would do with the field io?
I am not PCW, but I think that should be fine, as long as it is
definitely 5V. Most prox sensors don't even work until they have 7V on
the
peter you found it lol!
I have the spindle turned on by a standard output from the 7i77 card anyway
so didn't check that the spindle enable signal was turning on the
hm2_5i25.0.7i77.0.1.spinena pin
i just went through it again and double checked stuff and netted the
spinena pin also and it
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