CamBam
News:
 
*
Welcome, Guest. Please login or register. April 17, 2014, 19:31:01 pm


Login with username, password and session length


Pages: 1 [2] 3 4 ... 7
  Print  
Author Topic: CNC BZT PF 750P  (Read 15839 times)
Bob La Londe
CNC Jedi
*****
Online Online

Posts: 1358



View Profile WWW
« Reply #15 on: May 07, 2011, 00:13:33 am »

Out of curiosity I looked up your machine.  Its not exactly a cheapie is it. 
Logged

Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.YumaTackle.com
dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #16 on: May 07, 2011, 01:04:47 am »

Out of curiosity I looked up your machine.  Its not exactly a cheapie is it. 

Yes, the CNC + controller + 4th axis + alu table (option) + microlub + port from Germany to France ~6000 with tax (8700$ US)

It's one of the least expensive of the "non-Chinese" machine sold in Europe with this work size ....  Undecided

it's good material, but maybe too expensive ...  Roll Eyes

I first watched a Chinese machine Like this, but there appears to have many problems in all kinds especially with electronics and geometry.

Other problem with this Chinese CNC is that they are too slow (feedrate) for wood machining (~ 1000 mm/min max when machining, 1500 with rapid ... announced, 60% in real without lost step for guys on forums  Roll Eyes)

A friend that have a 6040 say me that in alu, the precision of the final part is ~0.1mm  Cry .. on the BZT, on my alu part I get 0.02/0.03 mm max of error on all dimensions.

I hope I've not made ​​a mistake buying this machine, 4th axis problem worries me ... I don't understand what appends ..

++
David
Logged
dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #17 on: May 10, 2011, 22:43:18 pm »

Hello,

some job on the vice.

I must redo the jaws, I use 25CD4 (4130) to do this











On the free jaw, I must use a sheet of metal (0.05mm) to correct the perpendicularity.





++
David
Logged
dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #18 on: July 12, 2011, 01:13:51 am »

Hello,

Some news about machine and accessories.

The strange problem on my 4th axis is solved ... that comes from Mach3, settings problem. I've an output signal (unused) that is set on the same pin number that the "Dir pin" of the A axis, I just uncheck the unused signal all that run well .... one month to find that  Roll Eyes

I continue the job on the vise.

Exceptionally I made the effort to paint it  Roll Eyes  Grin



there is no crank, I must do it.









Finished



And with is little family  Grin



After the alignment problems that I have with the 4th axis when cutting "venus" I decide to add a "lardon" (don't know English name) to help the positioning of the A-axis and is tail stock. In addition the plate of the axis is not in the right direction, the holes are not in front of the slot of the table. I must rotate the plate of 90 to solve the problem.

Origin


Rotated and add a "lardon"


I create two "lardon" for the tail stock too, and at the same times suitable screw and T









Then I use Cambam to cut a box to store all this accessories.











Not hight quality plywood  Roll Eyes







Now I'll work on a lathe project to add on the CNc









There is still work to do on the drawing, but I hope I can start the project in august .... maybe  Wink

good night
++
David
Logged
kvom
CNC Jedi
*****
Offline Offline

Posts: 915


View Profile
« Reply #19 on: July 12, 2011, 12:30:14 pm »

In English that "lardon" is a "key".  Given that another translation for lardon is "bacon bit", it's an interesting choice.   Grin
Logged
dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #20 on: July 12, 2011, 16:33:18 pm »

Hello Kvom,

Yes in French a "lardon" IS something like the bacon too  Grin



And a mill is called "fraise" (= strawberry)

And for a French, a "Bit(e)", it's not exactly the same things  Wink It's a organic tool with variable size that is used for polishing "holes" ... and that is also the second brain of a man (and frequently the first )

++
David
« Last Edit: July 12, 2011, 16:39:34 pm by dh42 » Logged
Dragonfly
CNC Jedi
*****
Offline Offline

Posts: 627



View Profile
« Reply #21 on: July 12, 2011, 22:52:10 pm »

And a mill is called "fraise" (= strawberry)
...............................................
++
David
Ah, now I see where it came from into Bulgarian. The word we have is <freza> if you read it phonetically.
Logged
Bench_Top_Precision
Storm Trooper
***
Offline Offline

Posts: 127


View Profile
« Reply #22 on: July 22, 2011, 11:03:51 am »

I'm a sucker for detailed solid modeling. What software are you using?
Logged

dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #23 on: July 22, 2011, 14:27:08 pm »

Hello,

I use SolidWorks 2008

++
David
Logged
Bench_Top_Precision
Storm Trooper
***
Offline Offline

Posts: 127


View Profile
« Reply #24 on: July 22, 2011, 20:07:37 pm »

That would have been my guess. I've been solid modeling with Solidworks for about 8 years and I'm still learning new things the software can do. Nice work.
Logged

dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #25 on: July 22, 2011, 20:17:59 pm »

Learning 3D softs as no end  Roll Eyes and SW is not an exception ...

I use also 3D Studio Max from more than 15 years and I always discover new possibility ...

some drawings with 3DSMax

++
David

Logged
Bench_Top_Precision
Storm Trooper
***
Offline Offline

Posts: 127


View Profile
« Reply #26 on: July 23, 2011, 10:02:48 am »

Very nice work, especially the lathe.
Logged

dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #27 on: July 23, 2011, 14:00:54 pm »

thank you  Smiley

For the lathe, the job is in stand-by from a long time  Roll Eyes .. I have "3dmax" period and "SW" period  Grin

It is on the "Audi S2" and "Pacific 231" that I have the biggest job.

++
David
Logged
dh42
CNC Jedi
*****
Offline Offline

Posts: 1529



View Profile WWW
« Reply #28 on: February 15, 2012, 15:26:35 pm »

Hello,

For Ruben ; I attach the config file for BZT PF750P (ball screw)
(can't find how to attach a file in PM)

If PF750C (trapez screw) change the max speed in motor tuning to 4000 for X and Y axis.

the file is set to handle 4th axis if needed.

I have slowed the max speed and acceleration for my use. (motor tuning ; config in mm)

X and Y = 6000 mm/min  acc = 400
Z = 2000 mm/min acc = 400

original value are 7500 for X and Y in place of 6000 and 500 for acc ; and 2500 for Z
It's to height for my machine when T is low in workshop !

++
David

* PF-750P.zip (21.8 KB - downloaded 44 times.)
Logged
serpvect
CNC Ewok
*
Offline Offline

Posts: 13


View Profile
« Reply #29 on: February 16, 2012, 17:04:00 pm »

David, thanks a lot for your reply!

Unfortunately I'm still experiencing some problems. I've also got a profile from the manufacturer directly, but both yours and their profile seem to be wrong for my driver.
Motor Output Step and Pin seem to be interchanged!
For example in your profile X Step pin #3, X Dir pin #2.
I've managed to get axis movement only with X Step pin #2 and X Dir pin #3. The same thing with all 3 axes. Besides I had to set Step Low Active for XYZ.

But still the movement is not stable, motors sometimes stall unexpectedly and immideately continues its movement.

I've switched to 25000Hz and set XY motor tuning to 160/4000/400 and step/dir pulse to 5/15. It became more stable now, but still not that good.

Btw mine is PF750P version too (ball srew), config in mm.

I'm now in doubt about my Mach3 station which is actually a Dell D610 notebook. As far as I know notebooks are not recommended for use. But it's specially prepared for Mach3 according to all the recommendations and Driver Test indicates "System Excellent" and the graph is quite a straight line. And yes, Mach3 is a licenced copy.

First of all I'm going to try a desktop PC and maybe an Ethernet-LPT interface (specially developed for CNC by local company). I haven't got other ideas at this time.

Sorry for being a nub, I'm just starting with CNC.))
Logged
Pages: 1 [2] 3 4 ... 7
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.194 seconds with 17 queries.

Copyright © 2008 HexRay Ltd. | Sitemap