Apparatus to make the crosswise movement of the toolholder slide mounted on the spindle of a tool machine automatic during the cutting motion

An apparatus for the automatic transverse movement of a cutting tool while it is rotated about a central axis by a tool machine, comprising:

• a body (1) adapted for non-rotational connection to a tool machine and having a surface for facing the tool machine;
• a spindle (2) adapted for connection to a rotating part of the tool machine, said spindle mounted for rotation to said body about the central axis and extending from said body surface;
• a slide holder (3) fixed to said spindle for rotation therewith about the central axis;
• a toolholder (4) slidably mounted to said slide holder for movement along a radial axis extending at an angle to said central axis;
• a direct current electric motor (14) mounted to said body, said motor having a rotatable shaft rotatable about a motor axis which is perpendicular to said central axis;
• a first worm gear (11) mounted for rotation to said body and engaged with said electric motor shaft for rotation of said first worm gear;
• epicyclic gear train means (9,21,22,19) connected to said slide holder;
• a helical gear (10) mounted to side slide holder and engaged between said first worm gear and said epicyclic gear train means for rotation of said epicyclic gear train means with rotation of said first worm gear by activation of said electric motor;
• a second worm gear (6) rotatably mounted to said slide holder and engaged with said toolholder for movement of said toolholder along said radial axis with rotation of said second worm gear;
• a gear pair (7,8) engaged between said epicyclic gear train means and said second worm gear for rotating said second worm gear with rotation of said epicyclic gear train means;
• a transducer (15) linked to said electric motor for sensing a position of said electric motor which corresponds to a radial position of said toolholder on said slide holder;
• and
• a connector (16) electrically connected to said electric motor and to said transducer for connection thereof to control equipment of the tool machine for controlling movement of said toolholder along said radial axis, on said slide holder, said connector being disposed at said body surface at a location spaced radially from said central axis, said connector having a connecting axis along which said connector is movable along with said body, for connection to the control equipment, said connecting axis being parallel to and radially spaced from said central axis;
• said connector comprising a first hollow component (28) adapted for connection to a fixed part of the tool machine, a second hollow component (27) fixed to said body (1) and shaped for insertion into said first hollow component with connection of said body and said spindle to the tool machine, said components extending along said connecting axis;
• and
• said first hollow component (28) including a tubular concentric member (20) formed as a crown comprising a plurality of plates defining connection terminals, and a centering pin (121) lying on said connecting axis, connected to said first hollow component and centered within said tubular concentric member (20) having the length parallel to said central axis greater than that of said tubular concentric member, and a orientation tang (23) connected to and extending from said centering pin.