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General Mach Discussion / Re: Partmaster Lathe V13 & Rear Turret Lathe under Mach3 ----problems
« on: February 14, 2016, 11:35:30 AM »The CAM is doing exactly what you're telling it.
You've set it to move to X30 Z8 for the currently selected tool, prior to carrying out a tool change, which means the next tool position will be relative to the previous tools position.
What you really want, is for the turret to move to a safe position using machine coordinates, so the next tool position is not dependant on the last tool position.
This is normally done by adding a G53 to the G0 move prior to a tool change, for example -Code: [Select]G0 G53 X0 Z0 (move to machine home)
T0101 (change to tool 1 with tool 1 offsets)
There will be an option somewhere within Partsmaster to configure what offsets/codes get used for a tool change, however I personally don't know.
Hi, thx for replay again, will try to explain how I feel things. So you/I/we want to make part like for example shown on pictures above, you know which tools you need and you need to measure them (for drill how much it sticks out of turret, which diameter it is, and off course you need to enter tool offsets in Mach3 Tool table. Next step is to take in count how much sticks part that you machine out of chuck, how big is your chuck and how much is longest tool in turret and how much maximum stick out of torturer some particular tool. And when you take all those things in a count you go in CAM in setup machine (you open tab) and you define Safe home position (and CAM need to do some things not only G00 X30.0 Z8.0 M05, at least I think so) , which is in my example, x=30 and z=8, so according to that point I see in CAM in graphic interface paths for every single operation(it is not easy to follow paths if you have lot of operations), and every operation starts from that point, and I want to adjust post processor (In worst case I will need every time in Mach3 macro make changes to get what I want , and to me it is not smart way to go, maybe it is easiest) to in reality get that for every new machining operation tool tip start in (x =30, z =8) which is safe and optimal point.
So :
"The CAM is doing exactly what you're telling it."
Is relatively true, machine (tool changer) goes to place what controller reads in Gcode, but thing it that I do not want that CAM(post processor) simple write :
N280 G00 X30.0 Z8.0 M05
N290 G49
N300 ( Twist Drill / Center Drill 7.2mm Dia )
N310 T0606
I want to adjust post processor in this way, OK currently active tool is center drill, next will be in use tool N0 7, it is type of tool drill (everything is defined in CAM setup, how long it is and diameter....) according to this type of tool extract somehow tool offsets for that tool,then I need (post processor needs)to retract complete tool changer first in plus absolute z tool offset value for tool N0 7 in direction and after that in positive or negative x direction and after those two retraction I can execute rotation of turret and tool tip will be precisely in coordinates
(x =30 , z = 2)
G0 G53 X0 Z0 (move to machine home), thing with this (I did not tried) but I think that if I will use that machine would want to go every time in some fix point in space that will be safe but there is no need to go every time to that place because some tools do not stick so much that I need to go on place to avoid worst case scenario tool.
Like I said I am newbie with Gcode so maybe I do not understand possibilities well . I would love to hear is this possible to make that what I have in my head because when I play in CAM everything tells me it should be like that.
So machine fallows exactly what is in Gocde but thing is I want to post processor generate different G code.