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Messages - kf2qd

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Sieg Machines / Here's how I home my machine.
« on: November 01, 2010, 02:53:42 PM »
Here's a Manual Homing sequence that works and is repeatable.

First - Jog all axis near (less than 1 ") the "Home" position. Tap the <TAB> key to bring up the Jog Pendant, change Jog Mode to Step and distance to 1".
Select an unused offset, On the offset screen type in 239 for the offset and make sure all values are 0 (zero)
I start with the Z axis - I now hit the Jog Z Up  key and wait for the Z axis to hit the limit switch and stop moving and the E-Stop is flashing. Reset teh E-Stop. on the MDI Screen type G92 Z0 and the DRO for Z will read 0.0000. Now zog the Z axis away from the limit and wait for it to finish moving 1".
Now repeat for each of the other axis.

I do this on a KX3 and have very repeatable results.

Sieg Machines / Re: Welcome to the Sieg Machines forum
« on: November 01, 2010, 02:45:22 PM »
the mill drives the z axis to the home switch the mill stops movement but the Z axis keeps increasing.

What is sounds like is this - the limit also cionnects to the Axis Drive. The axis Drive is stopping because you hit the limit, but Mach is no longer seeing this as a limit so Mach keeps putting out pulses because it thinks things are still moving.

Milling/routing woul;d still use M03/M04/M05, and laser control would require one of the other M code series - others have mentioned an output controlled by M10/M11. You may also need some signal that Mach can use to sense that the laser is ready, but for engraving that is probably not necesary.

for example -
 to route/mill -

G54 (route spindle offset)
M03 (spindle on forward)
profile code here
M05 (Spindle stop)

Move to some "safe location"

M10 (laser on)
code for engraving here
M11 (laser Off)

 Repeat these block as neceasary for the part you are making.

Machine offsets would work well for this - G54 for the router spindel, and G55 for the laser offset. (and other combinations, depending on whether you have more than 1fixture location on the machine.

You would just have to have sufficient clearence for the other tool to get out of the way when using the offsets.

You are looking for a couple air solenoids.

Sources will depend on where you are located. There are a number of comanies who make/sell them and it also depends on what part of the world you are in.

You have 2 options - you can mechanically tie the 2 slides together (the simplest approach as it is easier to control the offset between the to tools if you are running both tools in the same program. Or you can select the slave axis under config and each axis can have its own motor. This is more typically used on a ganrty type machine to keep the 2 ends running together.

If you will never run the 2 tools in the same program you could have 2 configurations that use different pins for the Y axis and one config uses the router carriage and the other config uses the laser config.

All depends on how you want to use the machine.

Promote and discuss your product / Re: Mach3 as 3d printer software
« on: October 27, 2010, 10:43:05 AM »
There has been another discussion of this , what you might want to consider is using the spindle speed as the extruder control. Would give you a way to start and stop the extrusion, as well as control the extrusion rate. Might require that you do some translation of output codes, but that should be a faily straight-forward text substitution which could be done using find/replace all, or by writing a small program in basic/C/other language of choice.

General Mach Discussion / Re: custom application
« on: October 27, 2010, 10:33:22 AM »
You might need to put what I call a reset circuit between Mach and the stapling machine. As it is flywheel driven and will repeat if the solenoid is held in. It would need 2 relays, with the second 1 wired as a latch. Relay 1 is just on off from Mach, Relay 2 is latched by a switch that is tripped as the staple head starts down. Use a noramlly open contact on the first relay in series with a normally open contact from the second relay.

    signal from MACH             Coil from Relay 1
|------| |----+----------------------------------( )-----|
|             |                                                       |
|             |   Switch on Head         Relay 2           |
|             +---------| |--------------+---( )----------|
|             |                                  |                    |
|             |     N/C on Relay 2        |                    |
|             +----------|/|-------------+                    |
|                                                                    |
|           N/O Rel 1      N/C Rel 2      Solenoid      |    
|---------------| |-------------|/|---------( )-------|

Sieg Machines / Re: X axis looses orintation
« on: October 25, 2010, 04:37:28 PM »
Did you use G42 for your first part and G41 for your second part? G41 "sometimes" has issues and the Mach folks are aware of the problem.

You also might want to look at Config/Motor Tuning and look at the step pulse for each axis. This should affect things the same all the time, but ... They say it should be some value between 1 & 5 but my machine seems to like 6. If it is too low you may miss a step or steps.

Di the motors sound different during the time when the motin did not follow the path? that is the first sign that you are either missing steps or overloading the motor.

General Mach Discussion / Re: Output voltage problem?
« on: October 14, 2010, 04:27:51 PM »
Problem is that the printer port outputs are not meant to handle much current. You need to have teh output from the computer go to a transistor that is sized correctly for the curent teh relay requires. Normally this is a function provided by a "break out board". It isolates the machine electrically from the computer and priovides the circuits to be able to handle the cuurent requirements of real world components like relays and such.

What is the relay switching? AC or DC and what current? there are a number of solid state realys that are able to switch higher currets, but are meant to take a low current control signal.

General Mach Discussion / Re: Charging for CNC Time
« on: October 14, 2010, 04:20:55 PM »
Are you running programs you create? Or that the customer creates? Do you have to do work on the drawings? or do they come from your customer with everything cleaned up? How much does it cost for the operator (wages, benefits, disability, etc) How much does the floor space cost a month? What are your monthly costs for the machine?(payments, interest...) How much do any competitors charge? How much for cutters and electric? How much time is going to be spent loading and unloading the machine?

You will probably have to charge a bit less to start with, just to get them hooked, and figure out the best practices for getting the work done. After a bit of work you will get a better idea of what the real costs are. What is the going rate for shop time in your area?

Years ago I ran an old Tape Turn Regal. The shop charged twice the rate for the rest of the machines in the shop. After my first month they made money hand over fist because, once I figured out how to run it, I could get so much more work done that the manual machines. The hourly rate may sound a bit high, but if you are runnng it right you should be getting things done faster so the end product doesn't cost any more.

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