Helix bore start

[Leon82]

I use pocket to finish holes sometimes after circle mill when I want it really close

Turnoff roughing and set spring passes to 10 or so. It will circle round and round without leading off for the duration of the spring passes

[Guest]

12 minutes ago, Leon82 said:

I use pocket to finish holes sometimes after circle mill when I want it really close

Turnoff roughing and set spring passes to 10 or so. It will circle round and round without leading off for the duration of the spring passes

Just use circle mill and set the overlap

Right click in the overlap box and choose length of entity....choose the circle, that will give you a full free pass.....multiply to get more cuts if needed

Helix bore too  

 

Edited June 5, 2017 by Guest

[Leon82]

Cool,I'll have to try that

[BrianP.]

On 6/5/2017 at 3:53 PM, JParis said:

Just use circle mill and set the overlap

Right click in the overlap box and choose length of entity....choose the circle, that will give you a full free pass.....multiply to get more cuts if needed

Helix bore too  

 

Just put 10 in the free pass and it will go round and round. You can still set an overlap.

Sample code out put. 1.0 circle with 1/2 inch endmill. Free pass set to ten overlap at .05.

 

T1 M6
G0 G54 G90 X0. Y0. S1069 M3
G43 H1 Z.1
M8
G1 Z-.5 F15.
G3 X-.0198 Y-.0291 I.0115 J-.0291 F25.
X.0115 Y-.0604 I.0313 J0.
X.023 Y-.0581 I0. J.0313
X.0823 Y.0291 I-.0345 J.0872
X-.0115 Y.1229 I-.0938 J0.
X-.046 Y.1162 I0. J-.0938
X-.1448 Y-.0291 I.0575 J-.1453
X.0115 Y-.1854 I.1563 J0.
X.0691 Y-.1743 I0. J.1563
X.2073 Y.0291 I-.0806 J.2034
X0. Y.2475 I-.2188 J0.
X-.2475 Y0. I0. J-.2475
X0. Y-.2475 I.2475 J0.
X.2475 Y0. I0. J.2475
X0. Y.2475 I-.2475 J0.
X-.1237 Y.1237 I0. J-.1238
G1 X0. Y0.
Y.125
G41 D1 X.125
G3 X0. Y.25 I-.125 J0.
I0. J-.25
X-.125 Y.125 I0. J-.125
G1 G40 X0.
Y0.
Y.125
G41 X.125
G3 X0. Y.25 I-.125 J0.
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
X-.125 Y.125 I0. J-.125
G1 G40 X0.
Y0.
G0 Z.1

[Leon82]

38 minutes ago, BrianP. said:

Just put 10 in the free pass and it will go round and round. You can still set an overlap.

Sample code out put. 1.0 circle with 1/2 inch endmill. Free pass set to ten overlap at .05.

 

T1 M6
G0 G54 G90 X0. Y0. S1069 M3
G43 H1 Z.1
M8
G1 Z-.5 F15.
G3 X-.0198 Y-.0291 I.0115 J-.0291 F25.
X.0115 Y-.0604 I.0313 J0.
X.023 Y-.0581 I0. J.0313
X.0823 Y.0291 I-.0345 J.0872
X-.0115 Y.1229 I-.0938 J0.
X-.046 Y.1162 I0. J-.0938
X-.1448 Y-.0291 I.0575 J-.1453
X.0115 Y-.1854 I.1563 J0.
X.0691 Y-.1743 I0. J.1563
X.2073 Y.0291 I-.0806 J.2034
X0. Y.2475 I-.2188 J0.
X-.2475 Y0. I0. J-.2475
X0. Y-.2475 I.2475 J0.
X.2475 Y0. I0. J.2475
X0. Y.2475 I-.2475 J0.
X-.1237 Y.1237 I0. J-.1238
G1 X0. Y0.
Y.125
G41 D1 X.125
G3 X0. Y.25 I-.125 J0.
I0. J-.25
X-.125 Y.125 I0. J-.125
G1 G40 X0.
Y0.
Y.125
G41 X.125
G3 X0. Y.25 I-.125 J0.
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
I0. J-.25
X-.125 Y.125 I0. J-.125
G1 G40 X0.
Y0.
G0 Z.1

Mine posts a lead and lead off with each multipass even if it's set at 0 step over. But I'm stuck in the stone age's on x 9 so maybe 2017 will post that way

[BrianP.]

13 hours ago, Leon82 said:

Mine posts a lead and lead off with each multipass even if it's set at 0 step over. But I'm stuck in the stone age's on x 9 so maybe 2017 will post that way

Yup. I am running 2018. In X9 you do not have a freepass option so you would need to approach it the way JP said. Although I still hate the interface there are some really good additions to basic tool paths.

[Leon82]

1 hour ago, BrianP. said:

Yup. I am running 2018. In X9 you do not have a freepass option so you would need to approach it the way JP said. Although I still hate the interface there are some really good additions to basic tool paths.

Nice. 

[Kendo]

5 years later, same thing

Start angle set at 90 and I can't edit the output code at the machine because of this off-quadrant start point

[Chally72]

2 hours ago, Kendo said:

5 years later, same thing

Start angle set at 90 and I can't edit the output code at the machine because of this off-quadrant start point

Kendo, can you send me a Zip2Go of this file so we can take a look? My email is [email protected].

[Span]

You have to make sure that the distance from the top of stock to depth is evenly divisible by the  pitch.  I usually tweak the top of stock a bit to get get clean code.

[Kendo]

Thanks guys,

Dylan, I sent the zip to your email

Span, I got it to work by making the total depth + distance to top = divisible by the pitch

Initially I had the distance to top (.100") divisible by the pitch (.050")... and I thought (still think) that should have worked

[Chally72]

As you found, the behavior for this is dependent on the entire length of the hole, plus start clearance, being divisible by the pitch.

I logged D-47177 to ensure that the start angle you're entering is respected regardless of total stacked depth and pitch. If we enact this change, and afterwards if you wanted a quadrant point end angle as well, you'd still have to make sure that your total depth is divisible by pitch, but this Defect # is intended to fix the current issue where you have to continually play around with start angle to get it where you want.

[Kendo]

8 years later, same thing

[AMCNitro]

1 hour ago, Kendo said:

8 years later, same thing

Why not use Contour/Ramp?

[Kendo]

Because I'm fighting 360 arc output issue once again, even though I set the arc parameters, I still get tiny segments

Helix bore does 360 arcs, contour ramp won't

Would post a picture, but for some reason I can't because file size too large, even if I try to re-post the same picture I posted above

[JParis]

1 minute ago, Kendo said:

contour ramp won't

Create your toolpath, then use the chook Arc3d

[Kendo]

Ok I did

It's better, but now the arcs are about 260 degrees

Geometry is a single entity, full circle

[gcode]

8 minutes ago, Kendo said:

Helix bore does 360 arcs, contour ramp won't

Edit the arc page in Control Def 

Change it to Break into 180 degree arcs

[Kendo]

crap.... it was the linearize helix checkbox

sorry guys I haven't written a new program in a while

[JParis]

A piece of geometry, your machine/.control def and post would be helpful

This is a Contour Ramp going 1" deep at .125 per

N110 G0 G17 G40 G49 G80 G90
( HELIX )
N120 T287 M6
N130 G0 G90 G54 X-.927 Y.9063 A0. S8500 M3
N140 G43 H287 Z1.
N150 Z.1
N160 G1 Z0. F50.
N170 G41 D287 X-.957
N180 G3 Z-.125 I.3125 J0.
N190 Z-.25 I.3125 J0.
N200 Z-.375 I.3125 J0.
N210 Z-.5 I.3125 J0.
N220 Z-.625 I.3125 J0.
N230 Z-.75 I.3125 J0.
N240 Z-.875 I.3125 J0.
N250 Z-1. I.3125 J0.
N260 I.3125 J0.
N270 X-.9556 Y.8763 I.3125 J0.
N280 G1 G40 X-.9257 Y.8792
N290 G0 Z1.
N300 M5
N310 G91 G28 Z0.
N320 G28 X0. Y0. A0.
N330 M30

[Kendo]

Thanks for helping JP

I'm my own worst enemy, it was the linearize helix checkbox

I still think they should fix the helix bore bug, when you set the start angle and the depth doesn't divide evenly by the pitch, Mastercam seems to translate the start angle to an end angle, the the start just ends up where the math puts it. 

[Kendo]

Maybe it should be max pitch instead of a hard coded pitch value

I've never done helix bore and not wanted 360 arcs and nice simple code output from the quadrant

I bet some of you guys have done threads though that have the starts called out?

[crazy^millman]

23 hours ago, Kendo said:

I bet some of you guys have done threads though that have the starts called out?

Oh yeah many times. A feature for direction control of different things are timed to the thread.

[Chally72]

On 3/13/2024 at 3:54 PM, Kendo said:

Thanks for helping JP

I'm my own worst enemy, it was the linearize helix checkbox

I still think they should fix the helix bore bug, when you set the start angle and the depth doesn't divide evenly by the pitch, Mastercam seems to translate the start angle to an end angle, the the start just ends up where the math puts it. 

A major impediment to doing so- anyone that had previously set up a specific start angle parameter would have their helix bore shift clocking if they regenerated.