Messages

111

General Mach Discussion / Re: How start to run an Embroidery Mach profile

« on: July 04, 2010, 03:25:02 AM »

M786 just Zeroing the Z-axis DRO (Further explanation will be done by RENE)... You can play with Free software at the following download links at CNCzone....Just download free DST files from internet ..Open in my software and it will generate the Gcode...You can then help Rene...

We can improve this software with all of your help...RENE has tested the Gcode with 200stitchs per minute and the results are promising..Unfortunately i am busy in some other projects so didn't working on my embroidery machine and this software...

http://www.cnczone.com/forums/showthread.php?t=57404&page=33

112

General Mach Discussion / Re: Combine G73 and G83 Peck Drill Cycle!!

« on: July 04, 2010, 02:50:45 AM »

Thanks Bob for reply and advice...I have drilled holes in baffle yesterday..
I was running the controller on 24Volts so my rapid was very slow..I kept the Z-axis Rapid 10IPM and i can't exceed 16IPM because of loosing step... At these voltage parameters and G83 cycle one hole 60mm deep took 12minutes..
Yesterday I increased the voltages to 48Volt and my rapid increased to 25IPM and the same hole were done 5minutes per hole with G83...
Tommorrow i will further increase upto 60Volts as my controller and motors can bear upto 80volts and 110 volts respectively...

I also want to get red of the round column and Quill, so making my own column and spindle as you can see in the pictures..I have machined the column and now ready to drill holes for linear Rails..I machined exact slots for the width of linear rail on a NC boring machine... The base and the column are perfect at 90 degree...
Meanwhile, the spindle grinding is now in action after hardning upto 55HRC...


PS:
Can you repeat the Feed and Speed for HSS and HSco drills 8mm dia.

113

General Mach Discussion / Re: Combine G73 and G83 Peck Drill Cycle!!

« on: July 03, 2010, 11:49:57 PM »

Currently for HSS drill my RPM and Feed as follows:
Spindle RPM= 800 RPM
Feed= 25mm/min (1 IPM)
DOC per peck=2mm
Using Flood Coolant.

The above Feed and Speed was kept for HSco and both HSS and HSco last for 15 holes , so as a rule of thumb i modified the gcode for tool change afte each 10 holes... We have Tool and Cutter grinder.. We achieve the drilling through HSS by keeping the Rack tip angle 140 degree..

Following is our sequence:
A) Centre drilling all holes upto 3mm depth with 4mm HSS centre drill... All 224 holes without resharpening
B) Intermediate hole with 8mm HSS drill... G83 cycle with Q2 --- Flood coolant with 3 jet nozzles
C) Final drill 10mm HSS drill.... G73 cycle with Q2--- Flood coolant on

The tubesheet is 30mm thick solid piece..
The baffles are 3mm, total 18mm stacked with welding..total thickness 54mm...

114

General Mach Discussion / Re: Combine G73 and G83 Peck Drill Cycle!!

« on: July 03, 2010, 02:35:11 PM »

Thanks BR549 and Bobwarfield...

BR549 .. i will see how this comes out... Initially i was thinking to use G73 for half of the thickness and end it with G80, and on the next i use G73...However your idea seems to be applicable...
Bob...I tried HSCO, HSS and Carbide drills so far... HSCO and HSS  gives me almost the same results. No good luck with HSco... I wonder how peoples drill 1000 of holes in SS without sharpening the bit???
 My strategy is...For every 10th hole i have to pause the machine and sharpen the drill...Currently only using HSS...


http://www.youtube.com/watch?v=FH2X_W2MHBY&feature=email

115

General Mach Discussion / Re: Does Kernel Speed can cause IPM Limitation?

« on: July 02, 2010, 11:25:44 AM »

Thanks Hood,
Actually you answered me as you always do... My mistakes i have set the z-axis 15000 steps/unit (inch) and now i am clear that i can get 100 inch per minute....

ANOTHER QUESTION:
Currently I am driving the Stepper (4.2Amp/phase 1200 oz-in) with 36 volts... Now can you tell me if i increase the voltages ( My controller can support upto 80Volts)  then can i increase my IPM?

116

General Mach Discussion / Combine G73 and G83 Peck Drill Cycle!!

« on: July 02, 2010, 11:02:14 AM »

Currently drilling lot of holes on Stainless steel tube sheets and baffles... I am using HSS drill 8mm, 9mm and 10mm with great success so far.. Currently my strategy is using G83 for thorough hole 65mm deep in stainless steel and then enlarge these holes in second operation by using G73 cycle and using 10mm drill..

Now using G83 with Q=2mm for a hole of 65mm deep it gets 12minutes that is a lot of time... Is their any possibility i use G73 for a half of that thickness and then continue the same hole with G83 peck drill?

Any thought or suggestion?

117

General Mach Discussion / Does Kernel Speed can cause IPM Limitation?

« on: July 02, 2010, 10:52:14 AM »

Hi,
My Z-axis Step/unit= 15000 mm/minutes , and the Mach3 run on Kernel speed=25000Hz .. I can't go above 16IPM rapid... Is that the Kernel speed that can't generate the pulses?

118

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 29, 2010, 07:10:14 AM »

We will make a fixture... We will insert bolts at any 5- drilled holes at outer periphery and will turn it on the Lathe...

119

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 29, 2010, 05:47:48 AM »

Today I just experimented drilling on Multilayered baffles of the exchanger. Each single  baffle has a thickness of 3mm, total baffles in One Bundle= 18. Total thickness to drill= 55mm. We have used 8mm HSS drill and after TEN thorough holes the HSS drill was sharp as new.

120

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 28, 2010, 11:07:05 AM »

Hi Hood,
Today I finished the tubesheet drilling with final hole size 9.5mm..
You were right the drill grabed long swarf ..However I Gcoded to stop the machine after each 5 holes... Following was my strategy..

Spindle RPM: 400 RPM
Feed: 3 IPM
Peck Cycle: G73 with 3mm per peck
Time to complete One hole: 1minute 5 seconds

I drilled all the holes within 5Hours.. You can see the video in the following youtube link..
http://www.youtube.com/watch?v=FH2X_W2MHBY