How To: Continuous Rotation & Indexing

[Rcnewcomb]

the wrapped spiral gadget presumes an underlying 3D model. What if there is no model. How would it react?

Nope. It is just for making spirals on a round blank, usually with a profile toolpath. But the gadget doesn't know or care beyond drawing vectors. You CAN project the toolpath on a 3D model if you have one. Notice that in his example the Project Onto 3D model is not checked.

the wrapped spiral gadget seems to presume a ball end bit. What are the consequences of calculating for a ball end bit but running a square end bit?

All the wrapped spiral gadget does is create vectors. It doesn't know anything about bits or toolpaths.

the poster’s profile toolpath does not have project to 3D model checked. Even if there was a 3D model how would that come out?

See my first response above.

[tcoplin]

G01 Z2.5000

[Rcnewcomb]

Look towards the end of the G code file. (You can use Notepad to look at it.) What values do you see for Z?

G01 Z2.5000

That is probably the safe Z at the very end of the file.

Can you post the last 10 to 20 lines of the file, or zip the G code file and upload it to the forum?

[tcoplin]

G90
G20
F100.0
G64 P.1
G0 Z2.5000
S13000
M3
G04 P6
F100.0
G01 A0.0000 Y1.0000 Z1.4900
F100.0
G01 A0.0000 Y1.0000 Z1.1900
F50.0
G01 A0.0000 Y1.0000 Z0.9900
F50.0
G01 A9.7216 Y1.0101 Z0.9288
F50.0
G01 A0.0000 Y1.0000 Z0.8675
F100.0
G01 A7666.0307 Y9.0000 Z0.8675
F50.0
G01 A7656.3096 Y8.9899 Z0.8063
F50.0
G01 A7666.0307 Y9.0000 Z0.7450
F100.0
G01 A0.0000 Y1.0000 Z0.7450
F50.0
G01 A9.7216 Y1.0101 Z0.6838
F50.0
G01 A0.0000 Y1.0000 Z0.6225
F100.0
G01 A7666.0307 Y9.0000 Z0.6225
F50.0
G01 A7656.3096 Y8.9899 Z0.5613
F50.0
G01 A7666.0307 Y9.0000 Z0.5000
F100.0
G01 A0.0000 Y1.0000 Z0.5000
F100.0
G01 A0.0000 Y1.0000 Z1.4900
F100.0
G01 Z2.5000
G01 A0.0000 Y0.0000
M02

[Rcnewcomb]

G01 A0.0000 Y1.0000 Z0.5000

The code correctly cuts down to 0.5" above the center of the stock, which would leave a 1" diameter stock. Therefore you are not dealing with a code issue.

That leaves a machine, or a process issue such as:

• inaccurate Z-zero setting
• lost steps in Z (perhaps hitting the top of your Z travel)
• bit slipping
• Z calibration issue

[tcoplin]

Could it be a PP issue? For flat work I use a Onefinity X50 but for 4 axis I use a Shark HD510 Rotary. Rounding seems to work if I model with 2D and simply cut to a specified depth. When trying to use the rounding Gadget (which seems simple enough to setup) all I get is air cuts between the stock edges as if it does not know where the A value is and it doesn't cut to the depth specified.