Gallery, Projects and General > Oooops!

This is getting infectious - stuck chuck

<< < (4/4)

PeterE:
Yes Jonny, exactly. I quickly found that out and after the first small scare when the chuck + countersink almost dropped out onto the floor. I also found out how I could manage it to get the result I wanted. I my case, the countersink sort of drills itself into the material creating a down-force which will pull the chuck off the mandrel, but when I followed the downpull properly with the feed handle, it didn't happen again and the countersink was nicely made.

Of course it got hot, so a liberal amount of coolant/lubricant avoided the countersink to stick from heat expansion.

Anyways, my chuck sticks firmly onto the mandrel, but if there is a tolerance mis-fit like too long mandrel taper portion, or too shallow chuck taper "hole", or both, the chuck will not fit securely I think. The differences are minute ....

BR

/Peter

Jonny:
Seen those pneumatic drawbars, those operate doing the same thing.

Always clean the MT or R8 before inserting, mines had 10's of thousands. As they say practice makes perfect, short sharp blow but follow through the downward stroke.

Navigation

[0] Message Index

[*] Previous page