Handy Cam tool for cutting timing pulleys

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28 Jul 2013 03:00 #37103 by mariusl
I found this software for cutting timing pulleys that I thought was very handy. It is only a couple of dollars but worth it. The guy who writes it, Bob Adamns, made special changes, on request, to be Linuxcnc compatible.

You can find it here. http://www.cad2gcode.com/pulley/

I am not affiliated with this software or Bob in any way. I just found it to be handy and wanted to share with all.

Regards
Marius


www.bluearccnc.com

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28 Jul 2013 09:04 #37124 by andypugh

mariusl wrote: I found this software for cutting timing pulleys that I thought was very handy. It is only a couple of dollars but worth it.


Certainly cheaper than buying the right cutter and doing it "properly"



However, now that I do have the cutter, I am happy to tooth any supplied blanks for LinuxCNC users, for free :-)

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28 Jul 2013 13:44 #37130 by mariusl
That's very impressive Andy. I wish we all had such fancy machines as that but for the plebs, we have to make other plans. The software allows you to use the blade type gear cutter that is shaped correctly or the right size tool with a second pass to bevel the teeth. It is actually just an indexer program, the rest is up to the user.

May I ask what the hobb cutter cost you?

Regards
Marius


www.bluearccnc.com

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28 Jul 2013 16:09 #37135 by ArcEye

Certainly cheaper than buying the right cutter and doing it "properly"


Looks like you have the Harrison up and running.

Still seems to have a 'hand-draulic' X axis, or is it manual or CNC as suits?

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28 Jul 2013 17:44 #37138 by andypugh

mariusl wrote: May I ask what the hobb cutter cost you?


I think I paid £32.

The same guy has several others, but I don't recognise the belt profile on many of them.
www.ebay.co.uk/itm/310370873373
For example.

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28 Jul 2013 17:46 #37139 by andypugh

ArcEye wrote: Still seems to have a 'hand-draulic' X axis, or is it manual or CNC as suits?


The pulley I am making there was for driving the X axis, so I was having to drive it manually.
I will have the choice of auto or manual on all axes when I have finished (which isn't far away, might even be today)

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28 Jul 2013 18:42 #37147 by mariusl
That is very reasonable. I looked his stuff but that was the only 5mm pitch hob. The others are all 8mm or some other funny pitch.

Regards
Marius


www.bluearccnc.com

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29 Jul 2013 03:02 #37182 by andypugh

andypugh wrote:

ArcEye wrote: Still seems to have a 'hand-draulic' X axis, or is it manual or CNC as suits?

The pulley I am making there was for driving the X axis, so I was having to drive it manually.
I will have the choice of auto or manual on all axes when I have finished (which isn't far away, might even be today)


Hurrah! This is the pulley that I am making in the video in-use:
www.linuxcnc.org/index.php/english/forum...-configuration#37181

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29 Jul 2013 21:19 #37226 by ArcEye
andypugh wrote:

Hurrah! This is the pulley that I am making in the video in-use:
www.linuxcnc.org/index.php/english/forum...-configuration#37181


Very good, just need some music playing and it could be a choreography!

Have you got a big motor on the knee or just high gearing?

Because my spindle is not fixed, I left my knee on the manual handle and move the table up to the spindle to touch off as required.

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29 Jul 2013 23:27 #37235 by andypugh

ArcEye wrote: Have you got a big motor on the knee or just high gearing?

All the motors are the same size, 750W
They all have pretty much the same gearing too, about 4:1. I think that the machine could probably run faster but I am hitting the limitations of software commutation.

Because my spindle is not fixed, I left my knee on the manual handle and move the table up to the spindle to touch off as required.

I suspect that motorising a quill is somewhat easier than a knee, but there was no choice here.
(And, anyway, this is a Universal machine so I need a motorised knee when using the horizontal spindle)

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