8 Attachment(s)
End Caps castellations done !
Hi Guys,
I've now got the castellations done on the end caps ! Now I have to machine the grooves for the Teflon rings and then the end caps are completed.
Attachment 387942 Attachment 387940 Attachment 387939 Attachment 387943
Here are pictures of the milling set up. I used a hex ER32 collet block to index the six castellations in each if the two end caps. The cap is mounted on a piece of 16 mm bar turned down to suit the bore in the cap. I drilled and threaded the end M6 to take a screw to secure the cap whilst machining it. I used a 4 mm diameter slot drill to cut the slots. The fourth picture shows the result. I need to make a key to suit so the cap can be tightened.
Attachment 387937 Attachment 387938
These two pictures are the components used and the finished caps. I had to make a small 6 mm long spacer to prevent the mill chuck from rubbing the collet nut. The piece on the screw was so that the screw could clamp the cap whilst milling.
Attachment 387944 Attachment 387941
The end caps in place and nipped up. I still have the 8 thou end float but I will sort that out a little later. I've given it a spin up for a few seconds using a rubber band and the Dremal tool. Holding them by hand the spindle is completely vibration free, lets hope that it stays that way when the grinding wheel is fitted.
Thanks for looking.