Question regarding Techno Post processing

[kerrazy]

I am currently in the process of testing a Z-Zero from table for a Techno-Isel LC 4896 machine and am having an interesting issue.

My first lines of code are as follows:
M3
G90
G01Z1.874
F179
G00 S16000
F44
G00X3.255Y12.219
M6T0
G01Z1.299

yet when I pre-process the file and run it, the z plunges to the table ( current Z-zero location) and retracts to the safe height of 1.874.

As My code does not indicate any G01Z0.000, I can only, hate to say it , but, Assume, their is something happening at preprocess time, and therefore I need to find where I can change this in the controller UI. Any help would be appreciated.
Dale Kerr
CADlink Technologies Inc.

[albyrne]

I have a Techno-Isel 30x32 and it has done the same since new, we have
had this machine for 8 years, I use MasterCam ver 9 and 10 to post process.
I use AutoCad to do my designs.

My guess is it is something in the controller setup.

[kerrazy]

I have a Techno-Isel 30x32 and it has done the same since new, we have
had this machine for 8 years, I use MasterCam ver 9 and 10 to post process.
I use AutoCad to do my designs.

My guess is it is something in the controller setup.

This is my guess as well at this time, I am downloading newest control software and will try and root through it today.
I will keep you posted. If others have a solution it would be greatly appreciated as this is a hindrance in its current state and I am sure it is a simple config issue to be changes.
Dale

[albyrne]

Yes, Let me know if you come up with any thing.

What I have done is to offset the part so the bit doesn't slam into the material, about 1" X and Y.

Alfred Byrne

[kerrazy]

Ok, so here is the deal

1.Click on the settings tab of your Techno Controller software, then select advanced from the menu on the left then select software switches and ensure move to origin at start of job (remembering from memory wording may not be exact) is unchecked.
2. Now ensure all of your files start with a G00X0Y0Z1.824(insert desired safe height) This value must be higher than your current material or your bit will plunge into it.

Example of file header:

M3 turns on spindle
G00X0Y0Z1.824 sets intial location rather than origin of 3 axis, if this does not exist it will go to origin of 3 axis 1st.
G90 absolute mode
S6000 spindle RPM
F75 feed rate
...

Ensure you do some air cuts to test this. What software are you using btw?

Dale

[albyrne]

Thanks Dale,

I'll try this in the morning. at home now getting my ac fixed.

Alfred Byrne

[albyrne]

I use AutoCad to design parts and MasterCam 9 and 10 to generate my
g-code, parts nesting and break-outs.

Alfred Byrne

[TECHNO SALES]

The machine has a deeper track of it's location by phsyically refrencing your XYZ zero position beofore running your part. While you can turn this function off, it is not advised. Better to move your drawing into negative Z space and have Z zero at the top of the work.

Charlie Bible

[RandK]

Charlie, please explain how this helps the controller/machine work better.

I do two sided ops of laminated stock and have to reference z=0 on the fixture plate for some operations. IMO this controller option is EVIL and should be documented out the ying-yang and defaulted to OFF. Let an informed user turn it on.