Patent ID: 11969811
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A method of manufacturing a spindle for a reciprocating saw, the method comprising:
machining a first portion of the spindle;
machining a slot on the first portion of the spindle; and
forming a throughbore extending through the first portion via a flow welding process, wherein the flow welding process includes
rotating a rod relative to the spindle; and
inserting the rod into the first portion of the spindle while rotating the rod, thereby rotational friction between the rod and the first portion causes material to be displaced from the spindle in a direction away from the rod to form the throughbore and a collar adjacent the throughbore, wherein the collar extends from an outer surface of the spindle and surrounds the throughbore.