Messages

1411

General Mach Discussion / Re: Thread Milling.....Single pass

« on: March 05, 2009, 03:39:24 AM »

I do a fare bit of thread milling, it is always done in one pass, the quality of the thread is more down to rigidity of the tool and machine, keep the tool as short as possible and solid carbide is better than mild steel tipped tools.

1" UNF with carbide single form runs at 2500rpm and 200mm feed, it works well for us, the machine weighs in at 14 tonne so its quite rigid 

Graham
 

1412

General Mach Discussion / Re: Test

« on: March 04, 2009, 03:21:10 AM »

What are we testing?

Graham

1413

G-Code, CAD, and CAM discussions / Re: G Code For Convex Surface In Z Plane

« on: March 02, 2009, 02:18:57 PM »

G20 G40
G00 X0 Y0 Z1.
G01 Z0 F10.
G18
G02 X-4. Z0 R3.4019
G17
G00 Z1.
M30

Graham

1414

General Mach Discussion / Re: Problems threading on the lathe

« on: March 01, 2009, 05:07:07 PM »

Hi Rich,

what is the spec of the thread you are trying to produce and have you a sketch of the part.

I do not understand why you have two G32 lines for each pass

Graham

1415

G-Code, CAD, and CAM discussions / Re: solidcam simult. 4 axis processor

« on: February 28, 2009, 12:39:43 PM »

That is a question for the Solidworks forum.

Graham

1416

General Mach Discussion / Re: What is your trade?

« on: February 28, 2009, 12:27:25 PM »

I run a CNC machining facility.

Not too big 15 CNC's from company's like Mori Seiki(3), OKK(3), Victor, Akebono(2), Okuma, Femco, Bridgeport, Focus(3) and as any true engineering company a manual Bridgeport turret mill and a Colchester lathe.

I/we do OK, I could do a lot better if common sense had not been bread out of the human race 

Graham

1417

General Mach Discussion / Re: circles are not round - need advice

« on: February 28, 2009, 12:02:33 PM »

Circles that are not round are caused by backlash or a loose gibb strip or a  loose ballscrew or some other part that is moving that should not be.

Mach outputs perfect circles so look at your machine for the problem.

Graham

1418

General Mach Discussion / Re: Anybody else having trouble with the editing on the Forum

« on: February 28, 2009, 05:29:25 AM »

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1419

General Mach Discussion / Re: newbie confused

« on: February 27, 2009, 11:05:52 AM »

What do you have your stepper drivers set to full, 1/2, 1/4, 1/8 step or what?

Is the motor 1:1 to the leadscrew?

Graham

1420

General Mach Discussion / Re: Image Editor Software For Creating Transparent Buttons?

« on: February 26, 2009, 12:08:14 PM »

I use RealDraw v4.0

Graham