MOUNTING METHODS

Craftsman can design an Expanding Mandrel system to suit your exact production requirements. Listed below is a selection of the common mounting methods for holding the mandrel in a lathe. These can be combined with most actuation and holding methods to produce a complete mandrel to your specification.
Spindle nose mounted : This mounting method is simple, yet accurate and efficient. The mandrel mounts onto the spindle of the machine replacing the standard machine chuck, making loading simple, direct and repeatable. It is ideal for large, medium or small production runs, and often used in conjunction with robot loading and drawbar actuation.
Face plate mounted : When direct spindle nose mounting is inappropriate, mounting to a faceplate or the face of the chuck is possible. Loading is simple, direct and repeatable. It is ideal for large, medium or small production runs, and can be used in conjunction with robot loading and drawbar actuation.
Spigot mounting : A spigot extending from the back of a standard faceplate style mounting allows the mandrel to be gripped using the soft jaws of the chuck. This allows quicker installation and removal of the mandrel.
Morse Taper mounted : This method is ideally suited for tailstock mounting. It is typically actuated using a cantilever nut, allowing long components to be supported at both ends during machining.
Between Centres mounted : Supporting both ends of the expanding mandrel allows longer components to be accurately held. The system is usually actuated using a cantilever nut, though front nut arrangements can be utilized on larger sizes.
Other mounting methods can be customised to your exact needs. Craftsman Tools Ltd have over 50 years experience and can design a solution for almost any problem.