On 3/8/2021 at 10:35 AM, JEhrhardt said:

What are some tricks of the trade to best combat chip wrap on a CNC swiss screw machine?

Get a Citizen  with LFV (low frequency vibration).   It breaks chips on every rotation.  

For a UNJC  thread make it the max minor hole diameter,  .094 inch.    Another trick is to run progressively bigger passes,  starting .001 higher each time so its cutting on one side like a lathe threading tool.

Is it a right hand or left hand end mill ?   

You could edit in a  M99 Pnnnn   line  after the tool change and Z rapid move  to jump to line nnnn.

Just remember to edit it out afterwards

Did that years ago by turning the area to be stripped .010 higher and cutting it off the coating with a PCD tool

I have a set of these attachments for calipers.  With some practice, they will measure inside grooves to +/-.001

Just calibrate them on a ring gage or just a micrometer set for the groove diameter.

I set the dial or digital readout to Zero at the nominal diameter.

Thanks Daniel, lots of good info in that document

JLW,  we are programming with the included conversational software at the machine, so not much macro knowledge on this control.

Newbee, we have a tech coming soon from Siemens, I will ask him what is known about it.

Hand changing tools on a cnc lathe is kinda weird, but it does allow some long boring bars to be used and then removed to be out of the way.

My book on geometric tolerancing says that if coaxiality is the prime consideration, then a Concentricity callout is preferable to a True Position.  The same MMC can be applied to both the feature and the datum.

I have a toolroom type CNC lathe with a Siemens 828d control on it.   The control only has 8 active tool offsets possible.  However, the tools are hand changed on an Aloris type toolpost,  so I could have way more than 8 tools for a job.   So the question is; how to change the number of active tool offsets?  I'm sure this control is also used on lathes with larger tool turrets than only 8.  

Any info or links welcome

Looks similar to the Variaxis J-500-5X  only the trunnion tilts the other way.   If I won the lottery, I would put one in my garage.

Used to turn 15-5 on an Okuma years ago.   Nowhere near that long though.  Nice feature on the Okuma is the LAP cycle can be modified with decreased depth of cut and/or feedrate depending on the diameter.  So it can start roughing with heavy cuts and then at  specified diameters, reduce the DOC and/or feedrate.  As I recall it is a G84 line after the G85 line and before the G81 line.

I use Sterling.  They will make it for the material you are drilling.

Try a different mouse?

Page 5 in this pdf;

http://www.commandtool.com/assets/uploads/general/U_Class_Flyers/URMA_Boring_Head_Kits.pdf

On 5/24/2017 at 10:33 AM, Jacob79 said:

I'm new to the fanuc controller, but have 15-20 years of experience with Siemens and Heidenhain.
My workplace bought a brand new Robodrill with 21 tool holders.
On both Heidenhain and Siemens you can have e.g. T50 in holder nr.1. and you just call T50, but on the Fanuc I can only have T1 in holder nr.1 etc.
Is there any way to get about this, because we have a rather comprehensive tool library already setup in MasterCam and we are used to identify our tools by their respective number?
 

I had a similar situation recently and copied the existing library, renumbered the tools and then made a cheat sheet showing showing the new tool numbers next to the old numbers.  Changing the tool numbers on the Robodrill if even possible, would be confusing to the operator because the numbers are on the magazine right above the spindle.  The machine uses a 30 taper spindle so its not going to be sharing the actual tools with other machines any way.

What happens if a file done on Mill 3D is opened on a computer with only Mill ?

Do they sell Doosan there?   It's a popular brand here and I've never had any problems with it.

Here is a tip.  Most common causes of broken taps are from drilling undersize or not deep enough or chips getting into the holes.  Before tapping the first time,  check the hole diameter and depth with gage pins.  For roll taps it MUST be  the nominal size to the depth the tap is going.  

What size end mills are you using?

I assume the large end of the blank is held at the 4th axis and the small end with a center?

Yes, it looks like MC is not interpreting the step file correctly.   Does Seco have  DXF files for import?  Might work better to create a tool from a line drawing.

1 hour ago, Rocketmachinist said:

I have no problem opening it. I am having a problem using the step file as the source file for importing as a tool into Mastercam 2018. It was a feature they added in 2017 but I am still trying to work out the bugs on how to make it behave correctly.

https://youtu.be/uEiRE1YVCq8?t=11m48s

Ok,  I will work on that.

They are used on toe clamps,  under the bolt in the slot.

One of the tools is doing several operations in a row and I want it to go home and option stop  between each task.  So I checked the box for Force Tool Change.

The output is:

M09

G91 G28 Z0 M6

M01

So the machine alarms because there is an  M6 with no tool specified.   Should not be an M6 at all, because it's just a dummy tool change.

In the 1980's (gasp),  I used to run a G&L machining center that had a hole skip button on the pendant.  Great feature, just push the button when the spindle was at an existing hole and it would skip it and go to the next one.   Nowadays,  I edit the program lines with an "L0", which means don't drill at this position.  Just remember to remove all the L0's afterwards!