Thanks to all for the info I needed and the quick responses

We have a new Haas VF2SS with the high speed machining option.

Are there any special codes (such as Mazak's G61) to turn this function on/off ??

Thanks in advance.

http://www.accu-trak.com/index.html

Click on technical info.

I just use a straight line at the knurl dia. for a finish w/ a perpendicular entry / exit of about .100. then offset the tool in to get the final DOC needed

Same strategy for either cut or formed knurls.

I also use a OD grooving tool to simulate a knurl tool.

G00 X1.1 Z-.1

G01X1.0F.02

Z-.875F.005

G00X1.1

Shameless plug:

Check out what Starrett has to offer !

We have a new Haas VF2ss with a next-gen control.

I am confused as to which feedrate format to use ( ipm or ipr ? ) .

Is the feedrate value dependent upon G94 or G95 ?

Is there a default format ?

An internet search mentioned using a G99 for ipr on a Haas lathe, but this is a mill.

Haas 'help' on control or pdf of the mill manual was of little help as some example programs used ipr and others used ipm.(w/out showing feedrate mode of control)

Thanks in advance

Use the migration wizard and make sure you are updating the 2019 files to the 2020 folders ?

As a starting point, I adjust (all sizes of taps) the rpm to achieve a 20-30 ipm feedrate.

Kinda slow but it has never failed  me.

Thanks to all.

The Shear Hog is our go to for aluminum and has been for over a decade.

Hi everyone,

I am looking for recommendations as to how to prevent grey cast iron chips from getting through the slots in a 4" Hardinge 5C step chuck and collecting between the step chuck and the step chuck closer. The boss says stuff the slots with permatex. Any better ideas ?

Thanks in advance,

Points or places ???

It also helps to have the OD fit the geometry of the knurl so that the # of  knurl teeth fits evenly on the OD.

See attached exel file , adjust cells that are red only.

Knurl Calcs.xlsx

Everything you need to know is tucked away here.

http://www.accu-trak.com/index.html

Lyndex-Nikken mini-mini chucks have been my choice for 1/8 and under , Just don't over tighten them.

Thanks Old_Bear

Is there a way to edit a stand-alone tool manager tool/holder and 'save as' to create a new item ?

Or do I have to start from scratch each new tool / holder. ??

Although kind of pricey for a mic, the Starrett ID Groove mic fits your bill and is the simplest tool for the job. IMNSHO

Thanks for the plug John.

The Starrett 701B is an internal mic for grooves 1.500 - 2.500 range.

Our small grinder was way off its X limits on Monday morning.

Control booted up w/ a display of 17.19.40

I have determined that 17 = Emergency , 19= X axis travel limit overrun, and 40=Y axis travel limit overrun.

I fiddled w/ the 'Home" prox switches and somehow the Y axis cleared up.

The I tried to duplicate the procedure on the X axis but to no avail.

Is anyone familiar w/ this antique controller  and possibly give me some guidance ?

The installation and user manuals only describe the error codes w/ no clues on how to rectify them.

tia

cp

I you are using a HMC  index it to 45 degrees then use a bullnose straight endmill  for the entire V groove.

Flutes get one side of the 'V', the bottom of the endmill gets the other side of the 'V'.

Dynamic toolpaths will also make quick work of it.

What is not working ??

I would have put all of the logic in the sub and cut with a WHILE-END loop but M98P0070L#507 should work ok.

Meanwhile try:

M98P0070L#507(CALL SUBPROGRAM O0070 AND REPEAT #507 TIMES)

and

G98G1Z-[#501+.10]F#505(FEED PER MINUTE)

Is that wall bent ? or bent and tapered ??

btw,  I like your straightedge.

sMakinoA81A

Doesn't the leadoff  's' make  "sMakinoA81A"  a string variable ???

Thanks to all