I made this press chuck for my cheapy hydraulic press. Fed up with it twisting due to being not very straight, and starting to use it for pressing serious stuff apart I decided to sort it out.
First get the pusher bar from the press in the mill, and set the boring bar head up to "reverse bore" it true. It was miles off vertical referenced to the surface the jack pushed on. No wonder it twisted when the load went on.
And the chuck itself is just a piece of bar bored to match the above dimension, with a 20mm hole in the other side. Two screws drilled and tapped just to keep the tooling home while there is no load on it.
Made these press tools up to push kawasaki z cranks apart from old rangerover halfshafts.
Its a bit straighter than when I started...
While I was making something else with a 40 taper on it, I knocked up this press tool for it too with a matching die from a bit of old scrap in the scrapbox (you can see the remnants of a knurl halfway up). If you push it through something until the ridge, its the perfect size to support a 40 taper tool. Used a ball turner in the lathe to round the nose off to a spherical shape.
Motivation, someone just gave me a steel filing cabinet and I want to turn it into a tool holder. It holds my 40 taper tooling nicely now with cone shaped pressings through the shelf itself. I might make a matching die for MT2 and MT3 too for the lathe stuff.
First get the pusher bar from the press in the mill, and set the boring bar head up to "reverse bore" it true. It was miles off vertical referenced to the surface the jack pushed on. No wonder it twisted when the load went on.
And the chuck itself is just a piece of bar bored to match the above dimension, with a 20mm hole in the other side. Two screws drilled and tapped just to keep the tooling home while there is no load on it.
Made these press tools up to push kawasaki z cranks apart from old rangerover halfshafts.
Its a bit straighter than when I started...
While I was making something else with a 40 taper on it, I knocked up this press tool for it too with a matching die from a bit of old scrap in the scrapbox (you can see the remnants of a knurl halfway up). If you push it through something until the ridge, its the perfect size to support a 40 taper tool. Used a ball turner in the lathe to round the nose off to a spherical shape.
Motivation, someone just gave me a steel filing cabinet and I want to turn it into a tool holder. It holds my 40 taper tooling nicely now with cone shaped pressings through the shelf itself. I might make a matching die for MT2 and MT3 too for the lathe stuff.