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Messages - bradjacob

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1
General Mach Discussion / Re: *** FORUM SEARCH FACILITY BROKEN ***
« on: December 22, 2018, 04:38:01 PM »
This is REALLY freaking LAME. Can't you fix your search function. I pay for software and can't use the support....

Please guys, come on already...

2
Hi,
I use these switches, Omron make almost identical units, both brands are good quality.

I made a little aluminum 'ramp' which attaches to the axis (on a slotted hole for fine adjustment) which activate the roller. It means that if and when the axis overruns
it does not exceed the switches 'overtravel' and damage it.

https://nz.element14.com/honeywell/bzc-2rq18-a2/switch-basic-top-roller-plunger/dp/1525198?st=roller plunger

Craig

Awesome - those look well made! Thanks you!

3
Hi,
without home switches Mach can 'home in place' So what you do is jog to a specific location, maybe bottom right corner with the
Z axis uppermost and then hit 'Ref All Home' and Mach will treat it current location as its home and reference the axes.
This method is as repeatable as you are accurate about jogging to the exact same location at the start of each Mach session.
Never likely to be as good as good quality home switches but....

Craig

Makes sense - thanks Craig for the reply. Any recommendations on decent switches (brands) or where to get them, for an X3 mill?

4
Hi everyone - I've tried the search and Google found some results, although it won't link - since the search is broken.

That said, is there a way to Home the machine (and save it)  without limit switches installed? Machine is a Sieg Super X3.

Thanks!

5
Hi,
as the pic shows the feedrate is only 6 units/min when you first fire Mach up.
I used the F300 command in my initialisation string for several years to good effect before migrating to Mach4.

Craig


Craig - I think I got the motors tuned. But regarding your post on the spindle. I'm thinking more about and wondering if the controller should be upgraded to one that will control the speed and actually run it? So if I change tools, the rpms will be right for the cutter.

What controllers should I look at that can offer faster operation and performance? (and, one that works on an X3 mill)

6
Hi,
there are dozens of different strategies for Mach to control a spindle. It depends on what sort of spindle you have and what sort of control you need.

The simplest control is to have Mach just turn in on or off, it could be as simple as a relay or a contactor for a bigger spindle or a Solid State Relay.
You could have the spindle go forward and reverse, if you need it, although I don't know anyone who has lefthanded cutters or drills, so it seems a bit pointless
to me unless your doing rigid tapping, and the fact that your asking tells me your not even close to the realm of rigid tapping!

Machs native speed control strategy is PWM. One output pin is turned on and off rapidly to emulate an analogue voltage which in turn controls a
DC power supply/amplifier for DC spindles or the analogue voltage input of a VFD for an AC spindle.

Another way is Step/Direction control not dissimilar to an axis motor. They are superbly accurate and often very powerful for rigid tapping an worth a FORTUNE!

To be honest a lot of people go overboard trying to control a spindle spending a lot of time and money on it when often they don't really need it, unless they
want to bragg (or toss off) about it. Start simple and work your way up to what you need, as opposed to what you want, assuming you not a bragger!

Craig

You're right Carig. I've been reading a lot and have seen that these machines (X3) don't usually come with spindle control and that's it's a process to upgrade the (controller?) or something else to get it to work. And Yep, I think I am overthinking it. Just tun on the spindle and run my GCode.

Now, I can jog all around, only it moves really slow. The prior (demo) install of Mach, had a profile that jogged fast - so I know the motors can go at (what I considered) fast. With my fresh install and license, they're running at like 1/3 speed. Could you guide me to now to fix that - what options/menu should I begin with?

(and THANK YOU) for taking the time to respond and help me out here, I REALLY do appreciate it buddy!

7
Hi,
when you first start Mach its common for the jog speed to be very low, sort of saftey thing.

Try some MDI moves:

G0 X5 <enter>
X0 <enter>
X5 <enter>
x0 <enter>

This should move the X axis back and forth 5 units at the max speed you've tuned the motors to.

Is the spindle under Machs control? Its quite common for a spindle not to be, you just lean over turn the switch on then
start your Gcode running. Its nice to have Mach turn your spindle on and off and control the speed but often
its not really required, you can do heaps just by turning on and off by hand.

Craig

Interesting Craig. I didn't even know that people do that. Again, this is all new to me. Do you know how I would know (how to tell), or better yet, how to (have) Mach control it?

8
This is where I started, and where I suggest you start as well.
http://www.machsupport.com/help-learning/
If THIS leaves any questions unanswered, there are plenty of folks here to help.

First things first  :)

Welcome !
Russ

Thanks Russ - this is what I needed - a place to start with! I'll read up and hopefully I'll get it all figured out ;)

9
Hi everyone -

I recently bought a used Syil X3 milling machine. I bought and installed Mach3 on my WinXP computer. All went smooth. Now, I know nothing about CNC and am learning, so I'm going through my frustration period now  >:(

I hope this is the right place to post this - and I did do some research using the Search function, but couldn't get any answers to my specific problem/machine.

So here goes - I have 2 issues I'm facing:

1. I can jog the table and head, but they move REALLY slow, and using the shift-key, doesn't make it go faster.
2. My spindle will not start. I can turn it on by pressing the button on the machine itself, but now using Mach3.

I guess I'll stop there and see if there are any suggestions on where to start.

Help!!   ;D ;D

10
New To the Forum -

Hi all, I'm Brad. A machinist from PA. I own my company that makes parts for the medical industry. Recently, I bought a used 2007 Syil (X3) mill, so my CNC journey begins now. I have zero knowledge of CNC or Mach3 so I'm trying to learn.

Glad to be join this group and hope to learn as much as possible.

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