[jeremy0203]

Hoss perhaps you can help with this since you have used the keling 6050's. Can you confirm that their schematic is correct in that the step and dir + input both get a 5 volt supply and the signals go to the step/dir - inputs

[hoss2006]

Yes the kl-6050's get wired like this.

CP+ = 5V+
CP- = step
DIR+ = 5V+
DIR- = dir
EN+ = NA
EN- = NA

The kl-5056D's have PUL+ and PUL- instead of CP+ and CP-.

Hoss

[forrest39]

A little prep work out of the way for future projects.
Hoss

G0704 Spindle RPM Readout with C3 - YouTube

So with the C3 giving spindle speed info, will Mach modulate PWM to make the measured RPM match the RPM inputted into the speed select window?
Thanks -Kevin

[hoss2006]

So with the C3 giving spindle speed info, will Mach modulate PWM to make the measured RPM match the RPM inputted into the speed select window?
Thanks -Kevin

From the manual

5.3.6.7 Special Function
...
Closed Loop Spindle Control, when checked, implements a software servo loop that tries to match the
actual spindle speed seen by the Index or Timing sensor with that demanded by the S word. The exact
speed of the spindle is not likely to be critical, so you are not likely to need to use this feature.
If you do use it, then the P, I and D variables should be set in the range 0 to 1. P controls the gain of the
loop and an excessive value will make the speed oscillate, or hunt, around the requested value rather
than settling on it. The D variable applies damping to stabilize these oscillations by using the derivative
(rate of change) of the speed. The I variable takes a long term view of the difference between
actual and requested speed and so increases the accuracy in the steady state. Tuning these values is
assisted by using the dialog opened by Function Cfg’s>Calibrate spindle.
Spindle Speed Averaging, when checked, causes Mach3 to average the time between index/timing
pulses over several revolutions when it is deriving the actual spindle speed. You may find it useful
with a very low inertia spindle drive, or one where the control tends to give short-term variations of
speed.

Hoss

[Herbertkabi]

hi Hoss,
Hopefully you will not come angry when I ask a little bid out of topics

Please help me to identificate this gear,
There is Code, the only thing I can identify is number of tooth - 128,
Tried SDP with no success,
Is it metric at least it is 5.00 mm thick,

I need to find two 14 ... 15 ... 16 tooth pinions for this gear.
Perhaps someone can help me,

Thanks,

Have a nice day everybody,

cheers,
herbert

[hoss2006]

hi Hoss,
Hopefully you will not come angry when I ask a little bid out of topics

Please help me to identificate this gear,
There is Code, the only thing I can identify is number of tooth - 128,
Tried SDP with no success,
Is it metric at least it is 5.00 mm thick,

I need to find two 14 ... 15 ... 16 tooth pinions for this gear.
Perhaps someone can help me,

Thanks,

Have a nice day everybody,

cheers,
herbert

That's a spur gear.
SDP/SI - Section 1 - Gears - Hubless Spur Gears - Metric drive components 785-1-47
your part# is next to last on the list, it's stainless steel.
Imagine you would want another spur gear.
The ones on this page I believe will work and they have 14,15 and 16 teeth available.
http://www.sdp-si.com/d785/html1/D785Gear040_3.html

This source has brass module 0.8 spur gears in the teeth you want.
http://us.misumi-ec.com/us/ItemDetail/10300428340.html
Hoss

[Herbertkabi]

Thank you very much, Hoss,
I made a right choice when slinged my question in this place
Hoss knows all

Thanks,

cheers,
herbert

[hoss2006]

Some thoughts on ATC's that I was noodling on.
Hoss

[ame=http://www.youtube.com/watch?v=CZKjuuLlC4E]G0704 ATC Thoughts - YouTube[/ame]

[hoss2006]

Here's the prototype ATC 4 so far.
Still a work in progress.
Hoss

[ame=http://www.youtube.com/watch?v=zAFK28FQdDg&feature=channel_video_title]G0704 ATC 4 Intro - YouTube[/ame]

[Fastest1]

Where is the warehouse? It has to be huge. You are always digging something out from a past project. So now you could have multiple carousels? I do like the latest semi circular changer. Looks pretty reasonable on amount of tools held and table sacrifice. I do have a question as usual, why the belt drive on the changers stepper? Seems like it really needs no torque, would provide more clearance for tools and would have a higher rotational speed since you are presently geared down. This would allow very impressive high speed tool changes and subsequent tool throwing performances on future hogging videos!:cheers:
Otherwise like usual, your imagination and resourcefulness are incredible. I always look forward to the latest update and videos are just a plus.

[hoss2006]

Direct drive was on the list of scenarios but I wanted more resolution.
Speed is not of any concern as you can see at the very end of the video and there is room
for a 570 stepper if needed but it's not.
A fully loaded rack has a lot of mass to start and stop and direct drive would have more trouble
not loosing steps.
This is made to use up to 12 tools and experience tells me 1:1 doesn't work great for accuracy.
Hoss

[duzallcnc]

Hi Hoss,

Thanks for sharing your ATC thoughts! Interesting as usual. Here is a thought I was having the other day regarding tapping. You have said that the treadmill motor is pretty strong. I wonder if it is strong enough to tap at 500 rpm like Dave D did in his video? If so the quill in the G0704 is spring loaded. It seems to me that one could add compression springs between the lower part of the quill and the head case which would create a tension compression quill allowing tapping with any tool holder. A suitable air spindle lock would also be required for non tapping operations. Your thoughts are appreciated.

Thanks

Sean

[hoss2006]

Interesting idea. I'll look forward to you doing it and then sharing the results with the rest of us.
Pics and videos please.
Hoss

[hoss2006]

Reworked my tool change macro for this ATC and gave it a little test.
Just in the ballpark for now till the ATC's completely done but it's moving like I want.
There's a delay in there for the air blast but that's not hooked up yet.
Hoss

[ame="http://www.youtube.com/watch?v=llPc3Uq8xFQ"]G0704 ATC 4 Tool Change Macro Test - YouTube[/ame]

[mwood3]

I have to say, that is my favorite ATC so far... compact, looks easy to build and plenty of speed...

you mention that its made to use up to 12 tools, im guessing you would just make the carousel to fit the needs? looks like it would be very easy to change the carosuel for specific job requirements.

Edit: answered my own question, you pretty much covered it in the first video...you move so fast on this thread its hard to keep up!

[hoss2006]

I have to say, that is my favorite ATC so far... compact, looks easy to build and plenty of speed...

you mention that its made to use up to 12 tools, im guessing you would just make the carousel to fit the needs? looks like it would be very easy to change the carosuel for specific job requirements.

Edit: answered my own question, you pretty much covered it in the first video...you move so fast on this thread its hard to keep up!

Yeah, I did the smallest one first because it's the cutest.
The racks are simple to mount and adjust the height to suit your needs.
I wouldn't be swapping out racks, just decide which size/#tools you'd want first
and make that one.
The good thing about the macro is that you can have many more than 6 or 8 or 12 tools
set in the tool table.
For example, 2 different tools can share the same slot for different jobs.
Job 1, 6 tool rack, tool slot 1 is a 3/8 endmill set as tool 1 in the tool table and macro.
Job 2, 6 tool rack, tool slot 1 is a 1/4" reamer set as tool 7 in the tool table and macro.
Just plunk the tools you need in the rack for the job at hand.
Job 1 has it's set of 6 tools to make the part but job 2 needs a different set of tools to make that part.
Hoss

[mwood3]

Yeah, I did the smallest one first because it's the cutest.
The good thing about the macro is that you can have many more than 6 or 8 or 12 tools
set in the tool table.
For example, 2 different tools can share the same slot for different jobs.
Job 1, 6 tool rack, tool slot 1 is a 3/8 endmill set as tool 1 in the tool table and macro.
Job 2, 6 tool rack, tool slot 1 is a 1/4" reamer set as tool 7 in the tool table and macro.
Just plunk the tools you need in the rack for the job at hand.
Job 1 has it's set of 6 tools to make the part but job 2 needs a different set of tools to make that part.
Hoss

Very clever! I have zero experince with macro's so that will be a new adventure for me...

I also need to learn how to use sub-programs with mach3.
I know how they work on a fanuc controller, just use an M98 P???? to call from the directory. seems its not the same for Mach3 but im not sure, I did read through the Mach user guide but im still unclear. Oh well, another lesson for another day I suppose.

[hoss2006]

Yeah, M98 subroutines work in Mach 3 too.
Machs m6start macro works in the background, just a vbscript that runs when the m6 t# code is used.
Hoss

an m98 example


(15 TOOTH TIMING PULLEY FOR 16T ATC)
(.078 ENDMILL .935 O.D.)
G90
G0 A0 X0 Z.100
M3 S6000
M8
M98 P1 Q15
G0 A0 X0 Z.100
M5
M9
M30
M2
O1
G90 G01 Z-.010 F5
X-.800
Z-.020
X0
Z-.030
X-.800
Z-.040
X0
Z-.050
X-.800
Z-.060
X0
G0 Z.100
G91 A24
M99

[mwood3]

Yeah, M98 subroutines work in Mach 3 too.
Machs m6start macro works in the background, just a vbscript that runs when the m6 t# code is used.
Hoss

an m98 example


(15 TOOTH TIMING PULLEY FOR 16T ATC)
(.078 ENDMILL .935 O.D.)
G90
G0 A0 X0 Z.100
M3 S6000
M8
M98 P1 Q15
G0 A0 X0 Z.100
M5
M9
M30
M2
O1
G90 G01 Z-.010 F5
X-.800
Z-.020
X0
Z-.030
X-.800
Z-.040
X0
Z-.050
X-.800
Z-.060
X0
G0 Z.100
G91 A24
M99

So from this, I gather you must place the sub at the end of the program? not so conveinient for multiple programs running the same sub... is this common with other cnc controllers or am i misunderstanding?

[Starleper1]

Just a warning, cutter comp doesn't work properly in sub programs. I found that out the hard way. I believe there is a bug that never got fixed.