摘要:
Disclosed is a device for producing or machining annular undercut grooves (8) in a workpiece (7), comprising a support (2), which can rotate relative to the workpiece (7) about an axis of rotation (6) that defines the axis of the groove, characterised in that the support (2) may be moved along an axis of translation (5) running obliquely to the axis of rotation (6) and bears two working tools (13, 14), which protrude from the support in the direction of the axis of translation and of which one (14) has a working edge for machining an undercut (17) on the outer peripheral edge (15) of the groove (8) and the other (13) has a working edge for machining an undercut (17) on the inner peripheral edge (16) of the groove (8).
摘要:
Das Fräswerkzeug mit in vorwärts- und rückwärtsgehender Vorschubbewegung erzeugt Planflächen vergrößerten Durchmessers im Bereich von Durchgangsbohrungen 4,5 und besteht aus einem über einen Schaft 17 drehantreibbaren Werkzeugkopf 50, an dem zwei Schneidkörper 36, 37 radial verschiebbar und feststellbar in Aufnahmeschlitzen 46 geführt sind. Die Schneidkörper 36, 37 sind gegeneinander gestellt und liegen im Bereich des Aufnahmeschlitzes 46 aneinander. Die Verstellbewegung der Schneidkörper 36, 37 erfolgt über eine um die Längsachse des Werkzeuges drehbar angeordnete Wippe 28, die mit stirnseitig angebrachten und In axialer Richtung weisenden Steuerbolzen in der Art von Kurbelzapfen in zugeordnete Ausnehmungen der Schneidkörper eingreifen.
摘要:
It is disclosed a tool (1) for making an undercut and the like comprising a casing (5) adapted to at least partly house the components constituting the tool (1), a shaft (2) having a central axis (2a) and being adapted to translate relative to the casing (5) in a direction substantially parallel to the axis (2a), at least one slide (3) suitable to house at least one bit (3b) and to translate along a sliding plane (3a) perpendicular to the central axis (2a) and at least one lever (4) connected to the casing (5) and susceptible of rotation relative thereto around a rotation axis (4a) suitably spaced apart from the central axis (2a) and substantially parallel to the sliding plane (3a), which lever is adapted to connect the translation of the shaft (2) to that of the slide (3).
摘要:
Aninternal tube cutter (48) for cutting the inside of tubes (38) of a nuclear team generator comprises an extendable cutter (54) capable of being disposed within a tube (38) of the steam generator along with a flexible transverse positioning mechanism (56) disposed on the cutter (54) within the tube (38). The cutter (54) is attached to a drive mechanism (58) that is capable of rotating the cutter (54) when the cutter (54) is in an extended position to thereby cut the inside of the tube (38). The cutter (54) and flexible transverse positioning mechanism (56) are capable of being inserted into and traversing through tubes whose Inside diameter is severely reduced due to denting while being capable of being extended and severing the tube (38) at a aection of the tube (38) having a normal diameter.