Messages

1681

VB and the development of wizards / Re: manual tool change

« on: February 22, 2018, 05:43:45 AM »

ok let's try again,

if you step through code in VB Scripter window by using the green >|| button on top, you see a Little yellow -> (arrow)
on the left side.

if this arrow is in line:

-code "G53 G0 Z" & zzero-(zdif) ' riporto Z al valore zero pezzo con la differenza utensile

you can put the mouse Cursor above the following variables (1 line above):

zdif
zorig
znew

and see the values as tool tip text.

1682

VB and the development of wizards / Re: manual tool change

« on: February 22, 2018, 04:58:57 AM »

if you step through the code when you come to this line

-code "G53 G0 Z" & zzero-(zdif) ' riporto Z al valore zero pezzo con la differenza utensile

you can put the mouse Cursor above the following variables (1 line above):

zdif
zorig
znew

witch values are in there?

1683

VB and the development of wizards / Re: manual tool change

« on: February 22, 2018, 04:03:43 AM »

your code contains some Kind of height correction.
even it is very crowdy.

Code: [Select]

zdif = zorig - (znew) ' controllo se l'utensile è più corto o piu lungo

code "G53 G0 Z" & zzero-(zdif) ' riporto Z al valore zero pezzo con la differenza utensile
While IsMoving()
Wend
Call SetDro (2,0) ' porto contatore Z a zero
code "G0 Z" & zpos ' riporto Z al valore di partenza (inizio programma)
While IsMoving()
Wend

-copy your code into vbscripter window (Operator --> VB Script Editor)
-use the green >|| button to step throught code
-watch z-axis dro 

1684

General Mach Discussion / Re: Spindle orientation on a Bridgeport...

« on: February 22, 2018, 03:06:14 AM »

Hi Dave,

for the Moment i am 'flirting' with two Solutions:

1st chinese spindle Controller (Manual attached)
i have servo Motors and Controller from this compnay on all my machines,
they are working without any Problems. still waiting for a offer for this Controller.

pro
-gives me all posibilities
-modern,standard equipment
contra
-maybe cost
-Need's to be rewired
-will take some time to get


2nd i call it dogcatcher
-will be a sloted plate (5mm makronlon, because i am getting scared to drive metal against metal)
-driven by a 20mm pneumatic cylinder
-8mm proximity will give the Trigger for drive in
-8mm proximity detect dog

pro
-have all the material laying around
-cheap

contra
-part's to make will also take time
-not sure i will work


i am just brainstormin, all comments wellcome.

Thomas

I don’t think this problem is a big as you think with sensorless vector VFD, I once built a pump with that kind of VFD and it ran reliably down to 18 rpm with a load, or 1/100 of base speed. My machines also had to stop and line up with rails that plugged in. Taper your drive dogs as much as you can too, so you don’t need to be perfect. Run the motor at the lowest possible speed and tell it to stop on the sensor. Worse that will happen is that it will overshoot a bit. As long as the overshoot is reliably consistent you can adjust sensor position to accomodate.

i have tryed this solution, but was not able to get the stopping Point good enough.

Another thought about this issue. Things like this work much better when they are designed to be extremely tolerant of misalignment rather than being very accurately made.  So I htink a better approach here is to have the tool gripper mounted to be spring loaded upward.  You press it against the spindle and if the dogs are not lined up the compressing of the spring triggers a limit switch that causes the spindle to rotate until the dogs drop into the slot and the limit switch then indicates that the alignment has been achieved, fasten the tool and  retract the gripper.  No spindle switch needed.

i have a 'umbrella' toolchanger witch drives in/out, and uses zhe Z-axis for tool Change, so no way.

1685

General Mach Discussion / Re: Spindle orientation on a Bridgeport...

« on: February 22, 2018, 01:36:29 AM »

The way my BTC-1 does it is to inch the spindle and drop a shot pin into a ramped slot and when the shot pin reaches the bottom of the ramp/can't rotate anymore it sends a signal to stop inching and the spindle is orientated properly.


Mike

that is also a way i was thinking about. any photos ?

Sorry I do not have any photos.
If yiou really need them I could take some this weekend.

Mike

Mike i would realy appreciate, to get maybe new ideas.
Thank You Thomas

1686

General Mach Discussion / Re: Spindle orientation on a Bridgeport...

« on: February 21, 2018, 06:50:16 AM »

The way my BTC-1 does it is to inch the spindle and drop a shot pin into a ramped slot and when the shot pin reaches the bottom of the ramp/can't rotate anymore it sends a signal to stop inching and the spindle is orientated properly.


Mike

that is also a way i was thinking about. any photos ?

1687

General Mach Discussion / Re: Spindle orientation on a Bridgeport...

« on: February 21, 2018, 06:49:02 AM »

Hello Dave,

i am also stuck on exact the same point on by TonGIL TNV40 retrofit.
i also have CSLab,Encoder on spindle to a ENC module and VFD 0-10V for 0-6000 RPM as spindle drive.

i worked on the spindle orientation for hour's without any succes.

on one of my other machines i have a step/dir driven spindle, on problem there.

so let's see somebody has a good idea, but i think there is no way to get a 0-10V spindle to do exact positioning.

on a other machine i have a lenze VFD witch allows me to do the positiong on the driver.

Thomas

1688

General Mach Discussion / Re: MACH3PLASMA LIMIT SWITCHES FOR G540/PROMA

« on: February 21, 2018, 01:34:18 AM »

that axcacly discribes a flowting head.

get a Switch monted and connected, the we will go throug the code.
should be no big deal.

Thomas

1689

General Mach Discussion / Re: macro for turret for boxford tcl

« on: February 21, 2018, 01:29:38 AM »

the a axis Needs not to be homed, because it is only doing incremental moves.

to remember the tool (witch is in front when you shut down the machine),

Config -> General Config -> right down Corner ->Tool Selection Pesistent

or just enter the tool number in main Screen by Keyboard.


About your spindle Speed:
do you have some more Information how your spindle is connected to mach3 ?

Thomas

1690

General Mach Discussion / Mach3 jog

« on: February 20, 2018, 10:55:00 AM »

Hi,

as soon i enable in Config -> Ports&Pins -> Inputs one of the Jog Inputs,
this Input let me jog always, doesn' matter wether jog mode is enabled or not.

General Config persistent Jog mode is disabled.

is there somewere else a config do allow Jogging only when jog mode is on?

Thank You Thomas