- Joined
- Aug 12, 2014
- Messages
- 87
Hi All
Been burning a bit of midnight oil these last couple of weeks. Not much got done in my workshop. But last night i couldnt sleep so i made a 4.5Morse Taper to ER25 adaptor as the subject line says. Sorry not much photos of the process up to now.
Got a 4.5MT to 5C adaptor with the lathe, but 5C collets are crazy expensive and scarce in my part of the world ,but ER collets are cheap and plentyfull . And i have a couple of sets around. So i started off by indicating in the topslide against the 5C adaptor between centres until the needle didnt move when slid agains the surface af the adaptor.
So i mounted the balance of the old pumpshaft i used to make the ISO40 adaptor and cut the taper. I have seen previously that the Chipmaster has a "split" taper. The taper is only at the front of the spindle and a small section at the back. I took the measurements and wrote them in my manual. Originally i thought this was a previous owners bodge, but apparently they are made that way! So i made this taper to seat in the same way. Here is a pic
Drilled a 16mm hole through it to make space for a drawbar. Then i blued it , fitted to the spindle and checked . Sanded the highspots down in the lathe till i got a decent fit.
Next up i fitted the taper to the spindle and cut the boss for the ER collet nut. Cut the 1,5mm thread and the fit for the nut was good. By that time it was about 6 in the morning and i had to get ready for work
Here is a few more picks of work to date
Tonight will hopefully be an early night for us and then tomorrow morning i will cut the 8° taper for the collets before the rest of the family arrives
Been burning a bit of midnight oil these last couple of weeks. Not much got done in my workshop. But last night i couldnt sleep so i made a 4.5Morse Taper to ER25 adaptor as the subject line says. Sorry not much photos of the process up to now.
Got a 4.5MT to 5C adaptor with the lathe, but 5C collets are crazy expensive and scarce in my part of the world ,but ER collets are cheap and plentyfull . And i have a couple of sets around. So i started off by indicating in the topslide against the 5C adaptor between centres until the needle didnt move when slid agains the surface af the adaptor.
So i mounted the balance of the old pumpshaft i used to make the ISO40 adaptor and cut the taper. I have seen previously that the Chipmaster has a "split" taper. The taper is only at the front of the spindle and a small section at the back. I took the measurements and wrote them in my manual. Originally i thought this was a previous owners bodge, but apparently they are made that way! So i made this taper to seat in the same way. Here is a pic
Drilled a 16mm hole through it to make space for a drawbar. Then i blued it , fitted to the spindle and checked . Sanded the highspots down in the lathe till i got a decent fit.
Next up i fitted the taper to the spindle and cut the boss for the ER collet nut. Cut the 1,5mm thread and the fit for the nut was good. By that time it was about 6 in the morning and i had to get ready for work
Here is a few more picks of work to date
Tonight will hopefully be an early night for us and then tomorrow morning i will cut the 8° taper for the collets before the rest of the family arrives