gear for an indexing head.

I will not Andries repeat the suggestions made above by others as I see them all to be valid.

There is however one situation that just may give a problem. If using a dividing gear having a small number of teeth, typically 20, then being smaller in diameter than the Myford gear the Detent Arm 8 may foul the Thrust Bush 11. I think this is unlikely but cannot remember just how close it is with the Myford size gears.

The easy way round this, if it occurs, is to increase the 7mm dimension on the Detent 5. Do therefore make all the other items then checking this before making the Detent.

There is though one minor error on the drawings, rather than describing it here the details can be found on my website at **LINK**

Harold

Michael

What an excellent idea !!

MichaelG.

Thanks Keith, Neil, and of course Harold. I will be sure to take that all into account when making the dividing head. One last thought. As I have the VSL Boxford lathe it would be very unwieldy to use an L00 mounted chuck. But I would think using a unimat chuck on an MT2 taper might be too small. Any ideas anyone?

Best Wishes

Andries

Probably the most commonly available chuck fitting in the model engineering field is the Myford. You can easily pick up faceplates and chucks from EBay and elsewhere with this fitting. Otherwise just stick with the MT2 taper and use soft end blank arbors machined to take whatever chuck you want to use. Many dividing jobs such as gear cutting could be done on an arbor or mandrel directly fitting into the MT2, but to make sure the job doesn't slip use a drawbar to hold things snug.

Keith

Edited By Keith Long on 15/04/2013 23:25:19

If you make it compatible with C5 collets you have the precision on the small stuff but can mount a reasonable sized chuck on either a 1 in arbor in a collet or on a specific V5 arbor. These also transfer into the lathe.