Edge Finder

[Ashish B]

Hi

Charlie

Thanks for your experience for the angular alignment & also greatly thankful for revalidating my technique for alignment of rotary axis.

Well Charlie, Refer to the snap attached. ( Snap 1 )
In the snap there are holes drilled on the circumference of the part.

HOW WOULD U ALIGN THEM ???.......That's the big question.

Well conventially & today also we insert a dowel in it & than keep aligning the dowel in a vertical axis...Well that's really needs a practical correction...But what & how is the Question?.

Also refer Snap No 2.

In this how can u align the keyway. As we discussed previously alignment for the part was possible but how can u align a keyway...As keyway has a width in picture..

Than not even with the aid of CAD u cannot align the part...

Than what ??


Ash

Thanks for your reply, patience & support.

[Charlie Gary]

Originally Posted by Ashish B Hi Charlie Thanks for your experience for the angular alignment & also greatly thankful for revalidating my technique for alignment of rotary axis. Well Charlie, Refer to the snap attached. ( Snap 1 ) In the snap there are holes drilled on the circumference of the part. HOW WOULD U ALIGN THEM ???.......That's the big question. Well conventially & today also we insert a dowel in it & than keep aligning the dowel in a vertical axis...Well that's really needs a practical correction...But what & how is the Question?. Also refer Snap No 2. In this how can u align the keyway. As we discussed previously alignment for the part was possible but how can u align a keyway...As keyway has a width in picture.. Than not even with the aid of CAD u cannot align the part... Than what ?? Ash Thanks for your reply, patience & support.

For parts like this, the easiest way I have found is to leave indexing features on the part until the very last operation. You can even bond something to the part after cutting it and machine locating features into the piece that was bonded on.
Finding the keyway without an external feature is a little different. I would think the easiest way would be a keyed mandrel fixture that slides into the hole. If the mandrel had a flat on the outside it could be used to dial the part straight after being put on the mandrel.
Too bad these parts can't be cut in one operation. Precision fixturing gets expensive, either in time to use it or money to build super accurate fixtures. Either way it costs a lot.
Did these answers help?

[Ashish B]

Hi Charlie...

Regards...

Well truely i agree to your point of bonding something on the part or planning the operation as a last operation...


I guess alignment with parts which do have a hole on the face ( the hole will be on the same face wherein the part's face will be resting for chuck clamping )...So an provision of a dowel has to be made in the chuck..

Well it is a physical damage to the chuck..( & that should not be done...Its really absolute NO - NO )

Well refering to the snap in the previous attachment, there is a hole provided on the circumference of the part. Imagine if we want to rework it out than what.....It can be possible but obviously by damging to the chuck...


The bottomline is - No alignment tools in existence for Rotary Axis.


Ash




Thanks for your time, support & Patience