Thread Milling , internal

[matchy]

Hi,

I reapir motor bike Heads on my HS1 Horizontal,

programs have been created on surfcam by a programmer,
but i want my Independance ,

I have a internal Hole bored to 19.15MM

and want to generate a 18 tpi right hand thread,(internal)

Can this be done on the HS1 without surfcam?

My boring bar is 20 MM diameter with a 55 degree insert,

The thread is started at the bottom of the hole ,

Any tips will be appreciated,

John, BRIT Bike Nutter,

[HuFlungDung]

I'd recommend you go to the Haas website and download the mill control workbook (available in a pdf file). There is a section in there (page 70) on how to threadmill using simple commands.

It is better that you fully understand what is going on, because some tinkering is usually required to get exactly what you need to produce.

[Pondo]

Originally Posted by matchy Hi, I reapir motor bike Heads on my HS1 Horizontal, programs have been created on surfcam by a programmer, but i want my Independance , I have a internal Hole bored to 19.15MM and want to generate a 18 tpi right hand thread,(internal) Can this be done on the HS1 without surfcam? My boring bar is 20 MM diameter with a 55 degree insert, The thread is started at the bottom of the hole , Any tips will be appreciated, John, BRIT Bike Nutter,

How are you going to get a 20mm bar into a 19.15mm hole?

[matchy]

thanks for spotting that,

39.15 is the hole size,

not 19.5

[Pondo]

I programmed it up quick. Here's a 20mm dia tool cutting an 18 TPI thread, 39.15 dia start hole, 1.625" OD of the thread. Starts @ Z-1. and cuts CCW up to Z.050.

%
O2024 ( THDMILL.TXT )
( T1 - THREAD MILL )
G17G40G80G90G0G54
N1
T1M6
( OPERATION 1; THREADING )
( TOOL 1; .7874 THREAD MILL )
( THREAD MILL )
S6000M3
G90G0G54X0.Y0.
G43Z3.H1M8
Z.1
G91
G1Z-1.11F42.
G41G0X.0752Y.0752D1
G1X.0139Y.0071
G3X-.0891Y.3365Z.01I-.0891J.1565
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
Z.0555J-.4188
Z.0556J-.4188
X.2462Y-.08Z.05J-.4188
X-.2699Y-.2198Z.01I-.1059J-.1456
G1X.0071Y-.014
G40G0X.0166Y-.105
G90Z.1
M9
G91G28Z0.M19
G91G28Y0.
T1M6
M30
%

[Pondo]

Also, what kind of bike are you working on? I have the top end off of my '04 V-Rod right now, I'm getting it back running tomorrow. I do bike parts for a hobby.

[matchy]

thanks for the help.

the horizontal is a bit slower to set up ,

But i have 4 sides on the tombstone,

it is a versatile machine,