Tool changing device for program-controlled universal milling and drilling machines

A tool changing device for program-controlled universal milling and drilling machines having a frame, vertical and horizontal work spindles, and a tool magazine having a transfer position, said device comprising:

• program-controlled tool transport means for selectively transferring tools between the tool magazine and the vertical and horizontal work spindles, said tool transport means comprising:
• an elongated cross member mounted to said frame, said cross member having a longitudinal axis;
• bracket means mounted to said cross member for limited axial and pivotable movement with respect thereto, said bracket means extending laterally from said cross member, said bracket means comprising an elongated bracket fixed to a sleeve;
• support means having a proximal end mounted to said bracket means and extending generally laterally therefrom, said support means being movable axially and pivotably with said bracket means, said support means comprising:
• a cranked support transversely mounted to said bracket;
• and
• linear drive means coupling said cranked support to one end of said bracket for transverse movement of said cranked support with respect to said bracket, said linear drive means being disposed in axially parallel relationship with respect to said bracket;
• an elongated cross-arm having a proximal end rotatably mounted to the distal end of said support means, said cross-arm having a longitudinal axis, the distal end of said cross-arm being arranged to extend at substantially a right angle with respect to said cross-arm axis;
• and
• means at said distal end for gripping tools for changing purposes.

A tool changing device for program-controlled universal milling and drilling machines having a frame, vertical and horizontal work spindles, and a tool magazine having a transfer position, said device comprising:

• program-controlled tool transport means for selectively transferring tools between the tool magazine and the vertical and horizontal work spindles, said tool transport means comprising:
• an elongated cross member mounted to said frame, said cross member having a longitudinal axis;
• bracket means mounted to said cross member for limited axial and pivotable movement with respect thereto, said bracket means extending laterally from said cross member, said bracket means comprising an elongated bracket fixed to a sleeve;
• said cross member comprising a wall formed with a hollow cylinder extending therefrom, said sleeve being disposed on said cylinder for rotation and axial movement thereon;
• linear drive means in said cylinder for providing the axial movement;
• rotational guide means coupling said sleeve to said linear drive means for providing the rotational movement of said sleeve;
• support means having a proximal end mounted to said bracket means and extending generally laterally therefrom, said support means being movable axially and pivotably with said bracket means;
• an elongated cross-arm having a proximal end rotatably mounted to the distal end of said support means, said cross-arm having a longitudinal axis, the distal end of said cross-arm being arranged to extend at substantially a right angle with respect to said cross-arm axis;
• and
• means at said distal end for gripping tools for changing purposes.

A tool changing device for program-controlled universal milling and drilling machines having a frame, vertical and horizontal work spindles, and a tool magazine having a transfer position, said device comprising:

• program-controlled tool transport means for selectively transferring tools between the tool magazine and the vertical and horizontal work spindles, said tool transport means comprising:
• an elongated cross member mounted to said frame, said cross member having a longitudinal axis;
• bracket means mounted to said cross member for limited axial and pivotable movement with respect thereto, said bracket means extending laterally from said cross member;
• support means having a proximal end mounted to said bracket means and extending generally laterally therefrom, said bracket means being movable axially and pivotably with said bracket means;
• an elongated cross-arm having a proximal end rotatably mounted to the distal end of said support means, said cross-arm having a longitudinal axis, the distal end of said cross-arm being arranged to extend at substantially a right angle with respect to said cross-arm axis;
• means at said distal end for gripping tools for changing purposes;
• a hinged protective cover between the work space adjacent the tools on said vertical and horizontal work spindles on the one hand, and said tool magazine and said tool transport means on the other hand, said protective cover having an open and a closed position;
• and
• linkage means coupling said bracket means and said protective cover, whereupon axial motion of said bracket means moves said protective cover between the open and the closed positions.