12 replies to this topic

[DavidB]

Hi guys,
With your upper turret lathes are you guys using RH or LH tooling holders?

RH tooling, the insert is upside down when cutting, swarf falls down away from insert, cutting forces pulling the turret up away from bed.
LH tooling, insert is visible and cutting forces go down through the turret to the bed.

Personally when I was running Lathes I had LH tooling with the insert visible. Easier to change in cut and more visual for insert inspection.
Now I see more customers using RH tooling, maybe because they can use same tooling holders in there manual Lathes also.

Cheers Dave

[Josh Kinney - ProCNC]

I always use RH. If I use a LH I have the post setup to force a M05 before and after.

I also have my post setup to output M14 for face live tools and M13 for Radial. This way all live tooling is setup as CW in the control...

[YoDoug®]

Normally RH but really I'm not very picky. As long as I get the tool performance I'm looking for.

[Scott Lundin Shopware Inc.]

I have usually gone with RH tools mainly because of large quantity production runs with very short cycle times.  Single point threading would normally require a RH tool and would take too long to reverse spindle if the other tools were LH.  I have run some flimsy entry level lathes that did benefit from LH tools to have the cutting forces go towards the machine bed.  A rigid good quality brand lathe shouldn't require LH tools.

[McLaren]

I thought it was so that if any bad sh1t happened the part was more likely to be thrown down instead of up?

[chris m]

We run all RH except for our (POS) Hardinge Super Precision lathes, which "require" left hand. Visibility is nice on LH but everything else is better with RH...

[DavidB]

Quote

Visibility is nice on LH but everything else is better with RH...

Like?

[Greg Williams]

What does Mori Recommend? My personal preference is LH.

[chris m]

Quote

Like?

Chip flow doesn't have to go around the tool to get away from the cutting zone; the tool is between you and the piece in case you jerk it out of the chuck; fewer "back side" clearance issues with tool setters; spindle rotates in the same direction (M3) for drilling and turning operations...nothing Earth-shattering, but better IMO

C

[DavidB]

Quote

With your upper turret lathes are you guys using RH or LH tooling holders?

Quote

the tool is between you and the piece in case you jerk it out of the chuck

??

[chris m]

With RH tooling in a "standard" turret lathe, the cutting forces direct the part DOWN (away from the door) in case of an insert failure or other action that pulls the part out of the chuck, while LH tools direct the part UP (toward the door). This is a minor factor, since I don't expect to be yanking the part out of the chuck on a regular basis, but it is still a factor.

[Rockness Allen Machine]

Greg Williams, on 18 October 2011 - 04:27 AM, said:

What does Mori Recommend? My personal preference is LH.

We just bought a brand new Mori NLX2500 and had several conversations with Mori regarding the subject. In theory it is the better way for very heavy cutting. In real life, all of the application guys go either way. I chose LH tools because I'm a stickler for theory.