Abstract: A locking cam for locking a pair of tool elements together is disclosed. The locking cam member is rotatably mounted in one of the tool elements such that a clamping surface engages a female gib surface formed on the other tool element. Clamping screws exert a rotative force on the cam member so as to bring the clamping surface into contact with the female gib surface and forceably lock the tool elements together.

Abstract: An end preparation tool for pipe fittings includes an end preparation tool having a rotary cutting head with shaping bits carried thereon mounted on a base that also carries a universal clamping fixture for pipe fittings having end openings to be machined in preparation for welding. The clamping fixture includes workpiece engaging clamping pads that permit adjustment of the position of the workpiece relative to a pair of opposed clamping plates that normally secure the pipe fitting in place relative to the cutting head of the end preparation tool. The clamping fixture includes adjustment features that enable the fixture to be moved transversely relative to the cutting head, along the rotary axis of the cutting head and about a vertical axis that permits indexing of the clamping fixture relative to the tool cutting head.