Newbie machinist here. I'm cutting a 11/32"-36 internal thread into Delrin, 0.319" diameter hole 0.3" deep. The problem I'm having is the hole is only cutting threads on the -X side of the hole; the +X side of the hole is not touched. I'm using a single form thread mill from Maritool with a cutting diameter of 0.240". The tool is exactly centered on the hole at the end of line 7, below, so the tool is where it needs to be when the tool is fed into the hole at the start.
I'm guessing the spreadsheet creator is making some assumption that is incorrect for my machine, but I've not been able to figure it out, thus asking here.
The code was generated by the "Single Profile Thread Mill Assist Program" found at Thread Mill Assist Program using settings:
Major diameter: 0.34375"
Cutter diameter: 0.240"
Pitch: 36
Full Thd Depth: 0.290"
SFM: 600
Feed per tooth: 0.0001 (intentionally set low so I could watch it cut)
Flutes: 4
Code:
%
O00000001
G90
G20
G54
G00 X0 Y0 F18.0 S9550 M03
G00 Z0
G01 G91 Z-0.29694 F50.0
G01 G41 X0.0259 Y0.0259 D1
G03 X-0.259 Y0.0259 Z0.00347 I-0.0259 J0 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X-0.0259 Y-0.0259 Z0.00347 I0 J0.0259 F2.31
G01 G40 X0.0259 Y-0.0259 F50.0
G90
M05
M02
%
Any ideas what I'm doing wrong here?
Thanks!
I'm guessing the spreadsheet creator is making some assumption that is incorrect for my machine, but I've not been able to figure it out, thus asking here.
The code was generated by the "Single Profile Thread Mill Assist Program" found at Thread Mill Assist Program using settings:
Major diameter: 0.34375"
Cutter diameter: 0.240"
Pitch: 36
Full Thd Depth: 0.290"
SFM: 600
Feed per tooth: 0.0001 (intentionally set low so I could watch it cut)
Flutes: 4
Code:
%
O00000001
G90
G20
G54
G00 X0 Y0 F18.0 S9550 M03
G00 Z0
G01 G91 Z-0.29694 F50.0
G01 G41 X0.0259 Y0.0259 D1
G03 X-0.259 Y0.0259 Z0.00347 I-0.0259 J0 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X0 Y0 Z0.02778 I0 J-0.0519 F1.15
G03 X-0.0259 Y-0.0259 Z0.00347 I0 J0.0259 F2.31
G01 G40 X0.0259 Y-0.0259 F50.0
G90
M05
M02
%
Any ideas what I'm doing wrong here?
Thanks!