Messages

51

General Mach Discussion / Re: Trip Limit, Causes Spindle to rotate!?

« on: April 11, 2013, 06:54:32 AM »

Seems your Limit switch is connected to Output pin of Spindle???...

52

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: April 11, 2013, 05:57:31 AM »

yes we are limited in RPM i.e. spindle . I have machined the similar parts on wood
Thats indeed a sturdy machine. Now we need special bits for milling Aluminum.

Some more pictures

53

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: April 11, 2013, 12:43:58 AM »

Material Aluminum
Thickness: 13mm
DOC: 1.5mm
Endmill: 6mm and 8mm (HSS)
Feed: 370mm/min
Flood coolant

Total machining time: 6Hrs

54

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: March 14, 2013, 07:51:04 AM »

Okay..  Slot were not side milled. Slot length was 40mm so two 20mm drill at the end. The small area left between the drilled holes were vertically drilled using end mills. The same cycle of hydraulic lock and unlock for the carbide endmill with 2mm peck-drill tool path

All is okay... Drilling took 2 Hours (IMHO) and the slot machining took 3 Hours...

PS:
We also made sealing labyrinth gaskets for our gas turbine air seals. The gasket were milled out of 3mm thick Aluminum plate (1meter x 2meter). The job took 6hours using 8mm end mill. Normally on vertical lathe the job takes more than 24hours. Unfortunately we have no pictures to show.

55

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: March 14, 2013, 04:23:26 AM »

I had time to take some pictures during the annual turnaround of our plant. The pictures of 10mm CS plate on 2000mm x 1000mm for modification in turbine condenser. The holes diamter are 20mm and the slot length is 40mm. The Slot were done by drilling two holes and the remaining portions were taken away using plunge milling with 20mm carbide endmill.

56

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: February 24, 2013, 11:11:03 AM »

Here is a short video link of chamfering operation
https://www.dropbox.com/s/p0ucupalz5tnpq1/MOV09713.MPG

57

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: February 24, 2013, 10:55:24 AM »

Some Pictures. We have two drums full of these chips/material shavings...

58

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: February 24, 2013, 10:23:21 AM »

Nope...These flanges are 1meter diameter and 90mm thick...We changed the strategy for the second flange.. Instead the Deep Drill cycle we used Break Chip drill cycle.. And all the holes finalized within 04 Hours...This time also perform the chamfering...

59

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: February 24, 2013, 05:10:21 AM »

Nice job. How do you compare the cycle time with your previous setup, including the time spent in marking the plate manually and punching centers on it.

Zafar... As you knew very well CNC saves time.. Who knows better than me, all my woodcarving design i have done by CNC i can't make 10% of them by hand in my whole life...
Centre marking may take atleast 2 Hours for these 24 holes by manually... I think we saved 24 Hours in CNC drilling for single flange...

You can save time by overriding the rapid speed to the max. You'll have to make changes to config/general config menu and deselect "Lock Rapid FRO to Feed FRO". That way your rapid feed will remain at max. while you change the Machining FRO.

Wow..thanks i shall do it right now.. This thread will be my guidance for any help in future for such embedded tricks..

Converting videos to mpg doesn't compress them as much as you can with xvid. Did you try the virtualdub tutorial I sent to you. Still waiting for the coolant drain system videos.

You are really master in tutorial writing.. I shall soon convert the videos with virtualdub  and shall sent you..
Thank You Zafar Sahab for the generous help:)

60

Show"N"Tell ( Your Machines) / Re: CNC conversion of radial drill - Novisa TRO 65/80/2000

« on: February 24, 2013, 01:09:16 AM »

I converted the Videos using Hamster free video converter... The Feed for drill was 44mm/min to 22mm/min and Spindle speed 500RPM to 200RPM considering smaller to Larger drill. The plate material ASTM A 283 C - A 570  and we used HSS drills.
The second plate drilling in progress.