topic Re: Start angle for thread milling in HSM Support Forum

Start angle for thread milling

Anonymous — Thu, 26 Jul 2018 21:55:53 GMT

I have both Inventor and Fusion at my disposal and I cannot seem to find a way to time/clock my thread mill operation with a feature on my part. Is there any way to adjust the starting position of my thread from an angular standpoint? Am I missing something, or does anyone have a work around?

Thanks,

Dan

Re: Start angle for thread milling

aewrmc — Mon, 30 Jul 2018 06:03:16 GMT

This seems to be a limitation of HSM? Other CAM software does it with a check box and and angle.

But I have noticed this in the attached file. Same thread cycle but different Setup's, X axis is flipped and outputs a negative X start position. So as a work around you could rotate the UCS to get the desired start point?

(Thread1)
T1 M6
S5000 M3
G54
G0 X-14.134 Y0.
G43 Z25. H1
G0 Z-8.
G1 Z-9. F1000.
X-9.134
G2 X9.134 Z-9.5 I9.134 J0.
X-9.134 Z-10. I-9.134 J0.
G1 X-14.134
G0 Z25.

(Thread1 2)
G1 X14.134 Y0. F5000.
G0 Z25.
Z-8.
G1 Z-9. F1000.
X9.134
G2 X-9.134 Z-9.5 I-9.134 J0.
X9.134 Z-10. I9.134 J0.
G1 X14.134
G0 Z25.

Re: Start angle for thread milling

Anonymous — Mon, 30 Jul 2018 20:49:30 GMT

After reading your post , I looked at the part in Inventor HSM and could not find a quick and easy solution. I believe that this is something that needs to be put in the HSM idea forum, to be implemented. I would vote for it , because

I myself have to to cut threads that were timed to a certain feature on a part.

Re: Start angle for thread milling

Anonymous — Thu, 16 Aug 2018 20:16:11 GMT

So far this is the only way I have found as well.

Hoping we can get this feature soon. I have a whole family of parts that have timed threads that must mate properly. Most parts don't have a feature that aligns with the necessary thread start point, this makes the sketch/math/WCS/verify workflow unnecessarily time consuming and prone to error.

Re: Start angle for thread milling

Anonymous — Fri, 17 Aug 2018 13:59:49 GMT

Are you using the thread mill option in 2-d contour?

I am using HSM for Solidworks and in the linking tab there is a box for entry position, you can sketch a point and select it for entry position.

Maybe this is not the case for you.

Jason

Re: Start angle for thread milling

Anonymous — Fri, 17 Aug 2018 16:47:05 GMT

I am using "Thread" from the 2-d operations menu. I have tried in Inventor and Fusion, there is no entry position selection under Linking.

Are you referring to an actual "2-d Contour" operation or just the 2-d vs. 3-d menus? That would be news to me if you could use a "2-d Contour" to thread mill. If so could you please provide a screenshot or two?

Thanks,

Dan

Re: Start angle for thread milling

Anonymous — Fri, 17 Aug 2018 16:56:30 GMT

My bad, you are right I am using the 2-d milling option for threading. Here is a picture of my linking tab, bummer that the inventor and fusion versions do not have it. Hopefully they will add it.