Threaded taper pins on LMS 5550/Sieg X2.7

[Frank O]

I notice at the base of the column on my LMS 5550 mill (Sieg X2.7), between the two M10x40 bolts on each side, there's a taper pin listed as having an internal thread of 6x24:



Just wondering what the function of these pins is. Attachment point for something (accessories)? Any role in, say, tramming?

 

[benmychree]

The taper pin would be a locating device, the tapped hole is to withdraw it.

 

[Frank O]

Thanks. I'd think that the four bolts would set the column's position pretty specifically. Would the pins' main role be during the manufacturing process?

 

[Chipper5783]

No. Bolts do not provide precise alignment. The boots have a little play - they have to or they would not turn. The machine is aligned at the factory, then the taper pin holds are drilled And reamed. The pins ensure you can disassemble/ reassemble the machine correctly in the future. The pins will also ensure that fit cannot shift.