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Messages - RICH

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631
Set your steps per unit to mm, so if you command a move of10 mm it moves 10 mm and not 10 cm.
You can also use the axis calibration feature in the flyout ( lower left corner on the screen) after using the Alt 6 tab.
 
Don't know anything about Freemill, but, if it matters, draw /create in the units that Mach is configured for.

RICH

632
mgreb,

M6 Txxyy   where xx is the tool # and yy is the offset . The M6 Macro is a call for a tool change and whatever scripting is in the M6 takes place.

T0101 - would be Tool #1 with tool #1's  offset
T0201 - would be Tool #2 with / using Tool #1's offset


RICH


633
Mach3 under Vista / Re: Mach3 G41/G42 G68 will it ever get fixed?
« on: March 13, 2017, 09:04:31 AM »
Consider using Cam as most the gcode is pre-compensated.
Good luck with your 4030 controller.

RICH

634
General Mach Discussion / Re: RPM / Feed Rates Again?
« on: March 13, 2017, 08:58:15 AM »
Depth of cut must be taken into account when calculating a feed rate to be used. You are just considering one part of numerous influences pertaining to the cutting of a material.

stress= force x area ......
Still the basic formula but needs additonal factors applied to it to get meaningfull information for pratcical use.

A lot of research work was done over the years ago by professional societies and in particular by Cleveland. Metalic material properties are rather consistant and factors for horsepower,shear,etc have been developed through research for arriving at suggested feedrates etc. Wood and manny other materials require different factors to be applied as compared to metal. Manufactures information is sometimes available and for a particular material one needs to consult with them .

That said....................

You can calculate a lot of info from some basic calc's but any engineering calc is just a resonable guideline for consideration. Most of the calculators you find by the major tool manufactures are still based on research done years ago by the Society of Manufacturing Engineers and others. Other calculators provide all kinds of info, BUT, again it is just a consideration to be used in practical application.

FWIW,

RICH  

635
If you have no automation and want to work as simple as as possible consider the following:

Assuming there are no homing / limit switches,not using soft limits, don't want to fool around with work offsets, no tool changing, using G90 absolute mode, and in your config for DRO's
nothing is checked...........THEN

- Start Mach
- Open the work offset table via Config>Fixtures......
  and if there are any work offset values for G54 change   the values to 0.00 for X,Y,Z and save.
- With the stock in the vise, move the axes such that tool is
  located at the basis for the Gcode program. ie; say top and
  center of the stock
- Click Mach coord's button, Click the Reference All Home button
- Move the tool to some point / start position.ie; above the   stock
- Run the Gcode for the part

You should modify the posted Gcode to remove G28, G54 and any other commads which are of no value, BTW, if you have no spindle speed control then you will need to change the feed rate and Mode from G95 to G94. The only Gcode you should need is the actual code associated with the part machining.

===================================================

Comments for understanding:

Actual posted gcode is probably pre compensated for the tool
to be used. The controlled point ( end & center of the end mill)
was moved to some point on the stock which represents a reference point / basis of the gcode. Since Machine Coordinates=Work Coordinates and the controlled point is at the reference point of the gcode then DRO value of X,Y,Z=0 is the same for all three.

Just something to try and it's about as simple as you can get.

RICH

636
Change the G54 to whatever work offset you want to use in the code.

Is there a choice in Fusion 360 Setup to define or select the work offset you want to use?
I know there is not in the Lathe module and can't speak for the mill module.

RICH

637
Must say only a novice at using Fusion 360 and have only played with the lathe function and not the other Cam functions in Fusion 360.

In Fusion 360 Cam you define the SETUP which includes all of the parameters associated with how the part will be machined. It includes stock size, tool to be used, orientation of the stock, post processor to be used, etc, etc.

The post processor, which you select, posts gcode based on the SETUP in Fusion. Have a look at the generated code. There is probably a line in the beginning of the gcode file for a G28 ( return to home ).

So the G28 command ( read the G28 command definiton in the Mach manual ) sends you home. Now Mach needs to know where the part is. You must define to Mach where the part is and  G54 is the default Work offset when Mach is started. Work offsets are from home to the part.

So, starting from home to machine the part, the work offset provides the distance the part is away from home amd Mach takes that work offset into consideration. If you want to use a different work offset, maybe G55,then the Gcode file must give that instruction to Mach.

BASIC SUMMARY OF ABOVE:
YOU must define to Mach where Machine zero is, where home is, where the part is.
             AND UNDERSTAND THAT
What code is generated by the post processor should be in agreement with the way you have set up Mach / are working.

NOTE:
How you work, level of controller automation etc, etc, has an influence on what the posted gcode should provide.

RICH

638
What version of Mach3 are you using?
Are you using the standard 1024.lset screen set
Is T1414 defined in the tool table?
What scripting is in your M6Start and M6End macro's?

RICH


639
General Mach Discussion / Re: phils lathe screen setup 3rd axis
« on: March 02, 2017, 01:37:35 PM »
Quote
how do i get the 3rd axis to work

You set up / configure the Y axis like you would configure any other axis.
First step is enable it. ;)

RICH

640
LazyTurn / Re: is lazyturn up and running??
« on: March 02, 2017, 05:57:33 AM »
Fred,

Quote
Is lazyturn up and running now?

Yes.
I wrote a manual for LazyTurn six years ago and it can be found in Member's Doc's.
Page 6 in the manual talks about installing it.

RICH

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