PNEUMATIC ACTUATING DEVICE AND PIPE MACHINING APPARATUS HAVING A PNEUMATIC ACTUATING DEVICE

摘要

The invention relates to a pneumatic actuating device (100) for an internal clamping device (8) of an apparatus (1) for machining a tubular body (7). The actuating device (100) has a cylinder (110), a piston (130) which is accommodated in the interior of the cylinder (110) in such a way that it divides the cylinder interior space into two cylinder regions (113, 114), a push rod (140) and a valve body (150). A single fluid connector (190) is provided on the actuating device (100) in order to feed the pressurized fluid to the valve, and a valve plate (160) is provided which is connected to the valve body (150) and is designed for producing a fluid connection between the fluid connector (190) and the separate cylinder regions (113, 114).