Drilling and milling machine's fixed frame

The utility model discloses a drilling and milling machine's fixed frame, including frame body and connection pad, the frame body includes bottom plate and the vertical welding riser on the bottom plate, has seted up fixed breach on the bottom plate of frame body, has seted up centering hole on the riser of frame body, sets up a plurality of waist shape holes on being located same circumference onthe riser of centering hole outlying frame body, also offered centering hole on the connection pad, offer on centering hole outlying connection pad with the riser of frame body on the waist shape corresponding connecting thread hole in hole, a centering shaft normal running fit installs in the centering hole of the riser of frame body and connection pad, the waist shape kong xuan that the bolt passed on the riser of frame body connects the connecting thread on the connection pad downthehole, with the riser fixed connection of connection pad with the frame body, just offers on the connection pad and is used for the bo