Mill Guy Thrown to Lathe Wolves

[CADCAM3D5AXIS]

I found the biggest thing is that lathes are all about clearances.

While you're watching through the window the tool cutting with feed override down, what you should be watching is the adjacent boring bar that's just about to be wiped out but the chuck jaws ROR!

Half the fun is finding the crashes/bumps before they happen. The really big stuff is the stuff that happens cuz it slipped by you and you did not catch it before things went bad.

[Rocketmachinist]

The biggest thing for me to learn on lathe was having to learn the iso codes for the tooling. After that lathe is really easy. The post errors don't help though.

[The Cathedral]

Lathe and the way it defines tooling is in serious need of an overhaul. It's still basically the same as it was in V7 over ten years ago.

[gcode]

Lathe and the way it defines tooling is in serious need of an overhaul. It's still basically the same as it was in V7 over ten years ago.

for what it's worth

I submitted an X9 lathe tool bug a couple of weeks ago

I was told, yes it is a bug and I'll give you a bug number if you like,

but

Its highly unlikely they will even look at it due to the lathe overhaul.

[gcode]

I used to do a lot of lathe work with Mastercam, but it's been a couple of releases since I did any serious work

as we have an excellent lathe guy here now.

Lately I've been doing a little lathe stuff in X9 and there are some subtle changes.

Stock recognition seems much more robust than I remember .

There is one change I really like.

It seems like there is an internal filter working now that eliminates redundant moves

I used to get code like this

 

G0 X1. Z.05

G01 Z0 F.008

Z-1.5

Z-1.6

G0 X1.1

X4.

 

In X9 it comes out like this

 

G0 X1. Z.05

G01 Z-1.6 F.008

G0 X4.

 

this is a big deal for the operators as it's much easier to read

[Rotary Ninja]

Ok, I need some help with a thread toolpath as I have never programmed one before. I am cutting an M50 x 1.5 6G thread. The GREEN line in the geometry is the area to be threaded. Can someone put a threading a toolpath on this so I can see what I am supposed to do?

 

Thanks!

Lathe Op.mcx-8

[Pilot Plant Supervisor]

Something like this.

Lathe Op.mcx-8

[ScottBro4]

Feel free to email me with any questions you may have. [email protected]

[Rotary Ninja]

Thanks Pilot! So does the number of cut depths get divided into the depth of the thread?

[Pilot Plant Supervisor]

In the thread cut parameters, you can choose equal depth or equal area. There are options for # of cuts, and depth of first cut. If you need more info, click the question mark at the bottom right of the dialog box for the help menu, then click the tab on the right that says field definitions. Now click on each highlighted phrase and it will give an explanation.

[bd41612]

Rotary ninja, you may want to look at this thread:

 

http://www.emastercam.com/board/topic/82040-g76-of-threading-passes/

[Rotary Ninja]

Thanks. I have another dilemma now. Look at the WTF toolpath. It has some weird move at the beginning of the toolpath that supposedly plunges into stock. Can someone please explain what I am doing wrong to cause this? Because I run into it all the time and usually I somehow get it fixed. But not this time.

 

Thanks.

Lathe Op.mcx-8

[ScottBro4]

Change your lead out to this.

[Rotary Ninja]

Wait. What?

[Colin Gilchrist]

Hi Kevin,

 

I'd send this in as a bug. The issue seems to be your 135 degree lead in angle. I tried "adding" a line using the Lead In options, still got the error. Change the angle to 180, (straight lead in) and it regenerates without an error...

[Rotary Ninja]

Yup, I just got the same thing.

[3rdstring]

I believe the issue arises from not retracting from the face on the previous op. If I change the retract or use a retract Z ref on the Fin Face path, no error.

[ScottBro4]

Rotary Ninja, your lead out was going straight down the face. When it starts the next tool path it makes a X move before it makes a Z move so its dragging the tool up the face in a rapid move. Change your lead out vector to 0 degrees. trust me its not an issue with Mastercam.

[Tyler Robotson]

It likes the facing operation first. If you start with the facing operation, it will use the stock automatically and you don't have to pick boundaries. You can enter a step over for multiple passes if needed, and if you want a separate finish tool, just enter stock to leave and make a new finish operation just chaining the face.

 

hey nice avatar

[Rotary Ninja]

Rotary Ninja, your lead out was going straight down the face. When it starts the next tool path it makes a X move before it makes a Z move so its dragging the tool up the face in a rapid move. Change your lead out vector to 0 degrees. trust me its not an issue with Mastercam.

 

I see what you mean. I changed that lead out on the facing toolpath and problem solved.

 

Thanks!

[Rotary Ninja]

Is there a way to force M41 or M42 in the NC code when outputting a toolpath?

[Pilot Plant Supervisor]

I think you would have to modify the post and use misc integers in the misc values tab to trigger that.

[Colin Gilchrist]

Gear codes? Yes, there is a switch inside the post to enable the gear code output, and a "lookup" table that sets the spindle speed ranges.

[Rotary Ninja]

I don't want it to change the gear according to the spindle speed. I want to force a gear setting. So I assume the only way to do this is manually editing the code.

[K2csq7]

adjust the post's table so you only get the gear you want, then enable the functionality...