Patent ID: 8621731
Filing Date: 2014-01-07
Classification: B29C,F16L,Y10T

Abstract:
1. A machining device for machining the material of a pipe system, wherein the pipe system has a joint area between a pipe having a smaller inner diameter and a pipe having a larger diameter, the machining device comprising: a rotary spindle driven to rotate about a rotation axis; protruding parts protruding radially from the rotary spindle and adapted to position the machining device or at least a part of the machining device inside the pipe having smaller inner diameter, the protruding parts each comprising a flexible lamella having an abrasive surface for machining the smaller inner diameter; steerable, actuator operable means, detachably attached to an end of the rotary spindle, for removing material from the joint area to define a hole in the joint area, and a steering device having means for controlling a direction of the rotation axis of the machining device in relation to a longitudinal axis of the pipe having the smaller inner diameter while removing material from edges of the hole with the protruding parts.