Thread Mill in lathe

[TOM R]

Hello Members, I'm hoping for some input into a a topic about thread milling in a lathe.

I'm using a Nakamura Tome TW-10 In the right or left spindle I have been single pointing O.D. And I.D. threads.

I have live tooling for both x and z axis or 90 deg. tooling for this machine.

I like to know is it possible to thread mill in the z axis or x axis using solid carbide thread mills. I have been searching for code or any input but haven't found anything on this topic. has anyone been able to accomplish this.

Regards Tom

[crazythunder]

Well if the machine does not have a Y axis I think it would not be possible on Diameters. You could do it on the face, just need to trig out all your tangents index angles if you do not have a post processor set-up for it. Here is some code as programmed through Mastercam.

Thread is a 3/4-10 on a 6" Dia pattern at 90 degree.

%
O0000
(PROGRAM NAME - FACE THREADMILLING)
(DATE=DD-MM-YY - 13-01-08 TIME=HH:MM - 15:54)
(MCX FILE - T)
(NC FILE - C:\MCAMX2-MR2\LATHE\NC\FACE THREADMILLING.NC)
(MATERIAL - STEEL INCH - 1030 - 200 BHN)
G20
(TOOL - 1 OFFSET - 1)
()
G28 U0. V0. W0.
G50 X20. Y10. Z10.
G0 T0101
G17
M23
G0 X6. Y0. Z.25
C90.
G97 S2000 M52
Z.1
G98 G1 Z-1.25 F10.
G41 X5.95
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X6.2355 Z-.0944 C90.786
X6.2178 Z-.0917 C91.152 F166.73
X6.1936 Z-.0889 C91.487 F152.43
X6.1637 Z-.0861 C91.781 F133.75
X6.1288 Z-.0833 C92.024 F111.05
X6.09 Z-.0806 C92.211 F84.81
X6.0484 Z-.0778 C92.333 F55.61
X6.0052 Z-.075 C92.386 F24.16
X5.9617 Z-.0722 C92.367 F8.7
X5.9192 Z-.0694 C92.275 F42.
X5.879 Z-.0667 C92.111 F74.7
X5.8424 Z-.0639 C91.878 F105.65
X5.8107 Z-.0611 C91.585 F133.72
X5.7848 Z-.0583 C91.238 F157.78
X5.7657 Z-.0556 C90.85 F176.84
X5.754 Z-.0528 C90.432 F190.04
X5.75 Z-.05 C90.
X5.754 Z-.0472 C89.568
X5.7657 Z-.0444 C89.15
X5.7848 Z-.0417 C88.762 F176.84
X5.8107 Z-.0389 C88.415 F157.78
X5.8424 Z-.0361 C88.122 F133.72
X5.879 Z-.0333 C87.889 F105.65
X5.9192 Z-.0306 C87.725 F74.69
X5.9617 Z-.0278 C87.633 F42.
X6.0052 Z-.025 C87.614 F8.7
X6.0442 Z-.0225 C87.659 F22.55
X6.0819 Z-.02 C87.76 F51.02
X6.1176 Z-.0175 C87.913 F77.76
X6.1503 Z-.015 C88.115 F102.24
X6.1793 Z-.0125 C88.361 F124.01
X6.204 Z-.01 C88.643 F142.67
X6.2238 Z-.0075 C88.955 F157.94
X6.2382 Z-.005 C89.29 F169.59
X6.247 Z-.0025 C89.641
X6.25 Z0. C90. F181.4
X6.2467 Z.0021 C90.271
X6.2369 Z.0042 C90.528
X6.2211 Z.0063 C90.759 F154.25
X6.2001 Z.0083 C90.953 F129.1
X6.1749 Z.0104 C91.098 F97.21
X6.1468 Z.0125 C91.188 F60.
X6.1173 Z.0146 C91.217 F19.2
X6.0878 Z.0167 C91.182
X6.06 Z.0187 C91.085 F64.95
X6.0352 Z.0208 C90.929 F103.8
X6.015 Z.0229 C90.723 F137.48
X6.0002 Z.025 C90.477 F163.95
G40 X6. C90. F190.98
G0 Z.1
Z.25
G28 U0. V0. W0. H0. M55
T0100
M30
%

[TOM R]

Hi CrazyThunder, Thanks much for your reply, Is there anyway to have a much shorter code. I wouldnt know how to generate this out of my head.

I have a internal thread 1/4-28UN by .360 depth on center X0 axis using a 3 flute harvey carbide threadmill, I'm not sure why the code is so long but is there anything else to be able to try.


I have surfcam but genrates bad code?? Nothing at all in c axis. just g1 then g3??

Regards Tom

[SWISS-TECH]

THIS IS A PROGRAM I RAN TO THREAD MILL A 3/8-16 THREAD IN A STAR SV-32 MACHINE.

N5(ID THREAD-3/8-16)
G98M8(C-AXIS ON / IN. PER MIN.)
G0C0.
T2064(ID THREAD MILL)
#124=0.50(Z-DEAPTH)
#125=[#124/.0625*360]
G97
M47S1000(LIVE TOOL ON)
G0Y0.0T64
G0Z-0.10
G0Y0.145
G1W0.50H-#125F2000.
G0Y0.0
G0Z-0.10
G28V0W0T0
M48
M9
G99
M1

[theemudracer]

Originally Posted by TOM R Hi CrazyThunder, Thanks much for your reply, Is there anyway to have a much shorter code. I wouldnt know how to generate this out of my head. I have a internal thread 1/4-28UN by .360 depth on center X0 axis using a 3 flute harvey carbide threadmill, I'm not sure why the code is so long but is there anything else to be able to try. I have surfcam but genrates bad code?? Nothing at all in c axis. just g1 then g3?? Regards Tom

The code is so long because it is off center so the C axis has to change directions while the X axis is going up and down.

1/4-28UNC???? Use a bottoming spiral flute tap. OSG makes good taps

[Saravanan25]

hello ppl,

i am working on a project and i need a cylindrical rod threaded at both ends ( aluminum rod)

could anybody provide a G-code program to produce

5/16 inch aluminium rod 10 inch in length

i need the rod to be threaded at both ends.

thread up to 3 inch from each end.( which means 4 inch of smooth rod in the center)

Your Help Will be Much Appreciated.

Thanks
Regards