Friction welding apparatus

Details Friction welding apparatus Friction welding apparatus

B - Operations, Transporting

23

K

78/43

B23K 20/12 (2006.01)

Patent

CA 1253723

ABSTRACT OF THE DISCLOSURE Friction welding apparatus comprises a housing and a workpiece support rotatably and axially movably mounted in the housing. An air driven motor is coupled to the workpiece support to cause the workpiece support to rotate relatively to the housing. A compression spring urges the workpiece support in a first axial direction relatively to the housing while a piston responsive to air pressure is provided to move the workpiece support relatively to the housing in a second axial direction opposite to the first direction. Air under pressure is communicated through a common inlet in the housing to a valve arrangement so that air is conveyed along a first path to the drive motor and along a second path to the piston. The valve arrangement is such that axial movement of the piston relatively to the housing causes the valve gradually to close thereby gradually stopping rotation of the motor. The second path remains open.

506216

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