Messages

231

Tangent Corner / Re: Electro-Punch design

« on: January 23, 2016, 06:12:43 AM »

Hey Russ

Just playing with some ideas - can I just check some figures please?

@ 150 FPM, it will only traverse .250" in 100 ms.

If my maths is good, one of these is wrong I think. 150 INCHES/min would be .25 in 100ms. 150 FEET/min would be 3inches in 100ms.

out of interest what diameter/material wire/tube are you wanting to cut?

232

Tangent Corner / Re: Electro-Punch design

« on: January 22, 2016, 12:01:34 PM »

Am I right in thinking that with your current spur gear system, the cutters travel with the wire as they're cutting? If so I reckon that's VERY neat.

233

Tangent Corner / Re: Electro-Punch design

« on: January 22, 2016, 07:59:35 AM »

Question is, would there be a formula ... or ? ? ? to determine the coil length, diameter, wire size, # of winds, resistance, ? ? ? ? ?

Hi Russ

There is - but (to me at least) it gets brain hurt complicated.

How about using the one you've got but use a lever to increase your cutting force?

(crude) picture attached.

234

General Mach Discussion / Re: Physical buttons for plasma

« on: January 20, 2016, 01:43:52 PM »

Ian, I looked at your THC but  seemed it was only for Hypertherm cutters, did I get that right?

Hood

Yep - correct - well I suppose yep(ish) - any plasma that has an interface providing a 50:1 scaled voltage, a TTL arcok and a "dry contact" trigger should work in theory but it's not easy to get the specs. At the time I designed it I was only aware of HT doing this. One guy reckoned it works with a Thermal Dynamics but I couldn't get much out of him so I lost interest and just say Hypertherm only for a quiet life. 

Ian

235

General Mach Discussion / Re: Physical buttons for plasma

« on: January 20, 2016, 12:04:47 PM »

Hi Rob - Not sure if I'm misreading what you're saying here but Mach3's THC loop is WAY faster than 10Hz. I've tested it (Mach3) to 2KHz with my THC and it keeps up no problem at all. The scope traces are on here somewhere for the last time someone came out with this 10Hz thing. I'll find them and re-post if it helps.

Ian

236

General Mach Discussion / Re: GCode window

« on: January 17, 2016, 11:12:04 AM »

just the way it works. The line to be executed is always half way down so you can see the last few lines and the next few.

237

VB and the development of wizards / Re: Edge detection on input

« on: January 17, 2016, 11:01:53 AM »

Look again at the code in your first post. The reason it doesn't read the input (in the second if) is simply down to a typo.

238

Feature Requests / Re: Online Tool Height control

« on: December 30, 2015, 06:17:33 AM »

Use emulated THC inputs. Make sure ArcOK (THCON) is active and THC is turned on. Then you can use the keys of your choice to jog Z whilst X and Y move under program control.

239

G-Code, CAD, and CAM discussions / Re: Strange motion error

« on: December 29, 2015, 06:32:59 AM »

Sounds like you're in CV mode. Even with just one axis in motion I think Mach3 will blend consecutive moves. Put a G61 (CV off/exact stop mode) at the beginning of your test code and see what happens.

240

General Mach Discussion / Re: What is my current feedrate?

« on: December 28, 2015, 12:48:26 PM »

Hi Stirling he is using a Candcnc unit and they use a lot of mach3 Gcode functions to program their THC. Are you back ?? off Holiday

Hi BR549 - Ah right - CandCNC - I'll keep clear I think.

Yes I'm back but already beginning to wish I wasn't....