| Gallery, Projects and General > The Design Shop |
| Small Boring head, required features |
| (1/1) |
| bp:
I've just finished boring a 34.7mm diameter hole through some 26mm thick free cutting steel. This was such an exciting task that I started to think about the features that make a good boring head. I know that there are lots of designs by smart people but I rather want to have a go at my own, at least designing it. Broadly, my known requirements are 1/ Usable on my Sieg X2 mill with an MT3 spindle 2/ Have a range up to (say) 40mm diameter with a vertical tool (pre-supposing that "conventional" layout is used) 3/ If built at all, to be built on my X2 mill and C3 lathe So, it seems to me that the requirements are 1/ Rigidity 2/ Smooth and accurate changes of diameter 3/ Rigid toolholding 4/ As short in "Z" as possible Anyone got any comments? Or should I just go and buy a good one, if so what? cheers Bill |
| chipenter:
I made mine from a blank end arbor , cuts out making the morse taper . |
| PeterE:
I am currently making a GHT boring head according to the drawings in his book Model Engineers Workshop Manual. I am right now waiting for an M6x0.5 mm tap and plan to screw-cut the feed screw with the mating thread. That way one turn on the dividing head makes 1 mm on the diameter of the bore. makes for simple maths I think. I have an SX1L mill, that is one number smaller than yours bp. Normally I have a 2MT to ER32 head in the spindle so I made a plain 12 mm stem for my boring head. Oh yes, if you think this head is useful, a material kit is available from Hemingway in the UK. BR /Peter |
| Navigation |
| Message Index |