Patent ID: 7174638
Filing Date: 2007-02-13
Classification: B23D,Y10T

Abstract:
1. A tube-cutting circular saw device, comprising a housing, a tube-clamping device fastened to the housing for clamping a tube to be cut in relation to the housing, a motor-driven cutoff tool pivotable about a longitudinal tube axis and a tool-guide device for the radial guidance of the cutoff tool around the tube, the tool-guide device comprising an annular rotation body rotatably mounted in the housing and being rotatable about the tube axis and a swivel plate connected to the rotation body by means of a swivel axis and being mounted rotatably about the swivel axis in relation to the rotation body, wherein the swivel plate contains a slide arranged displaceably in relation to the swivel plate for the radial positioning of the cutoff tool, and wherein a contour is formed on the rotation body and a cam, fitting the contour, is formed on the swivel plate, such that the cam engages the contour by rotating the swivel plate about the swivel axis in one direction and such that the cam disengages the contour by rotating the swivel plate about the swivel axis in the opposite direction, the rotation body and the swivel plate together with the slide and with the cut-off tool are rotatable together as a unit in said one direction about the tube axis when the cam is in engagement with the contour.