Hi all.. After not being in the workshop for over a year (life sadly got in the way) I have started fiddling with my gear again and the quick-step is almost done! Belt guard and some electrical tidying up to do...
(motor is a 24V DC item, run of a power supply)
20170907_194127 by
Bjorn Bursell, on Flickr
This the quick-step in action making the handle boss of a GHT retracting top slide, all machining phases could be made in one go in the lathe chuck, only part of to length, tap some threads and insert the ball handle after machining.... boy this is a very nice addition. The Myford is suddenly a multi operations machining centre, albeit manual..
20170907_195034 by
Bjorn Bursell, on Flickr
Milling the stop faces (underside of the boss, this would otherwise have been an second ops on the milling machine mounted on a one off made mandrel set up in the dividing head). Before this , the outer face had been turned to diameter a bit overlength and a axial hole has been drilled and bored almost to size. This is milled 3/4 around the boss, so 45 turns on the dividing head. infeed is put on with the cross slide, same as with ordinary turning work so milling to diameter on the boss was a doodle.
20170907_195918 by
Bjorn Bursell, on Flickr
Radial drilling of grubscrew hole
20170907_201025 by
Bjorn Bursell, on Flickr
Radial drilling at taper angle opposite side to grubscrew hole (topslide used for feed in on this operation) for the handle after some more lathework. After this the central hole was reamed to size and the boss parted of.. Done!
20170907_225108 by
Bjorn Bursell, on Flickr
Finished item
20170907_225150 by
Bjorn Bursell, on Flickr
Finished item