Control device for a boring tool holder of machine tools

Claim 2

A tool holder for fixing to the spindle of a machine tool adapted to align said spindle to a predetermined angular position about the spindle axis, said tool holder having a body for attachment to said spindle, a tool holding slide mounted slidably on said body, and locking means arranged normally to lock said slide relative to said body, wherein the improvement comprises an abutment fixed to the machine tool, an operating member for causing said locking means to unlock said slide by pressure thereof against said abutment, means for moving the aligned spindle and said abutment relative to one another to produce such pressure, and wherein said slide is slideable in a prismatic guide on said body, and said locking means comprises a rod movable axially in said body and urged by elastic means in a direction such as to clamp said slide against said prismatic guide.

Claim 3

A tool holder for fixing to the spindle of a machine tool adapted to align said spindle to a predetermined angular position about the spindle axis, said tool holder having a body for attachment to said spindle, a tool holding slide mounted slidably on said body, and locking means arranged normally to lock said slide relative to said body, wherein the improvement comprises an abutment fixed to the machine tool, an operating member for causing said locking means to unlock said slide by pressure thereof against said abutment, means for moving the aligned spindle and said abutment relative to one another to produce such pressure, and wherein said slide is slideable in a prismatic guide on said body, and said locking means comprises a rod movable axially in said body and urged by elastic means in a direction such as to clamp said slide against said prismatic guide.

Claim 4

A tool holder for fixing to the spindle of a machine tool adapted to align said spindle to a predetermined angular position about the spindle axis, said tool holder having a body for attachment to said spindle, a tool holding slide mounted slidably on said body, and locking means arranged normally to lock said slide relative to said body, wherein the improvement comprises an abutment fixed to the machine tool, an operating member for causing said locking means to unlock said slide by pressure thereof against said abutment, means for moving the aligned spindle and said abutment relative to one another to produce such pressure, and wherein said slide is slideable in a prismatic guide on said body, and said locking means comprises a rod movable axially in said body and urged by elastic means in a direction such as to clamp said slide against said prismatic guide.

Claim 5

A tool holder for fixing to the spindle of a machine tool adapted to align said spindle in a predetermined position about the spindle axis, said tool holder having a body for attachment to said spindle, a tool holding slide mounted slideably on said body and locking means arranged normally to lock said slide relative to said body, wherein the improvement comprises an abutment fixed to the machine tool, an operating member for causing said locking means to unlock said slide by pressure thereof against said abutment, means for moving the aligned spindle and said abutment relative to one another to produce such pressure, at least one compression spring deposed between said slide and said body for urging said slide in one direction when it is unlocked, said slide being movable in the other direction by pressure against a second abutment fixed to a machine frame, means for moving the aligned spindle and said second abutment relative to one another to produce the movement in said other direction, and a roller mounted on said slide for bearing against said second abutment, said operating member being guided in said body to move perpendicular to the direction of movement of said slide.

Claim 6

A tool holder for fixing to the spindle of a machine tool adapted to align said spindle in a predetermined position about the spindle axis, said tool holder having a body for attachment to said spindle, a tool holding slide mounted slideably on said body and locking means arranged normally to lock said slide relative to said body, wherein the improvement comprises an abutment fixed to the machine tool, an operating member for causing said locking means to unlock said slide by pressure thereof against said abutment, means for moving the aligned spindle and said abutment relative to one another to produce such pressure, at least one compression spring deposed between said slide and said body for urging said slide in one direction when it is unlocked, said slide being movable in the other direction by pressure against a second abutment fixed to a machine frame, means for moving the aligned spindle and said second abutment relative to one another to produce the movement in said other direction, and a roller mounted on said slide for bearing against said second abutment, said operating member being guided in said body to move perpendicular to the direction of movement of said slide.

Claim 7

A toolholder according to claim 1, comprising a screw mechanism for shifting said rod axially, one element of said mechanism being fixed to said body, while the other element of said mechanism is integral with a gear in mesh with a rack forming said operating member, a roller fixed to said rack bearing against said abutment.

Claim 8

A toolholder according to claim 1, comprising a plurality of seats on said slide each one adapted to house a tool, a seat of said plurality being disposed radially, two other seats of said plurality being disposed axially in the same diametral plane, but at different distances from the axis of the toolholder.

Claim 9

A machine tool comprising a spindle and means to align the spindle in a predetermined angular position about its own axis, a toolholder fixed to the spindle, said toolholder comprising a body engageable with said spindle and a slide radially shiftable on said body, locking means normally locking said slide on said body, a worktable and a single member fixable to the worktable and carrying two abutments at 90* to one another with one abutment parallel to said slide when said spindle is aligned, means for moving said worktable and said spindle relative to each other in two directions parallel to said abutments respectively, and means cooperating with said abutments to render said locking means ineffective and to produce a radial shifting of said slide on said body.

Claim 10

A machine tool comprising a spindle and means to align the spindle in a predetermined angular position about its own axis, a toolholder fixed to the spindle, said toolholder comprising a body engageable with said spindle and a slide radially shiftable on said body, locking means normally locking said slide on said body, a worktable and a single member fixable to the worktable and carrying two abutments at 90* to one another with one abutment parallel to said slide when said spindle is aligned, means for moving said worktable and said spindle relative to each other in two directions parallel to said abutments respectively, and means cooperating with said abutments to render said locking means ineffective and to produce a radial shifting of said slide on said body.

Claim 11

A tool holder for attachment to the spindle of a machine tool having a frame means to align said spindle in a predetermined angular position about its spindle axis, comprising: a body for attachment to said spindle, a tool holding slide mounted on said body and being movable on said body radialLy with respect to the spindle axis, locking means engageable with said slide and movable between a normal locked position locking said slide relative to said body and an unlocked position freeing said slide for movement, a pressure actuated operating member engageable with said locking means for moving said locking means to said unlocked position, an abutment fixed to said machine frame and engageable with said operating member, means for moving said operating means into pressure engagement with said abutment when said spindle is in said predetermined angular position to thereby unlock said tool holding slide, and means for displacing said tool holding slide radially with respect to the spindle axis when said tool holding slide is in said unlocked position comprising at least one compression spring disposed between said slide and said body for urging said slide in one direction when said slide is unlocked, a second abutment fixed to said machine frame and engageable with said slide for moving said slide in the other direction, and means for moving said slide in said other direction when said spindle is in said predetermined position.

Claim 12

A tool holder for attachment to the spindle of a machine tool having a frame means to align said spindle in a predetermined angular position about its spindle axis, comprising: a body for attachment to said spindle, a tool holding slide mounted on said body and being movable on said body radialLy with respect to the spindle axis, locking means engageable with said slide and movable between a normal locked position locking said slide relative to said body and an unlocked position freeing said slide for movement, a pressure actuated operating member engageable with said locking means for moving said locking means to said unlocked position, an abutment fixed to said machine frame and engageable with said operating member, means for moving said operating means into pressure engagement with said abutment when said spindle is in said predetermined angular position to thereby unlock said tool holding slide, and means for displacing said tool holding slide radially with respect to the spindle axis when said tool holding slide is in said unlocked position comprising at least one compression spring disposed between said slide and said body for urging said slide in one direction when said slide is unlocked, a second abutment fixed to said machine frame and engageable with said slide for moving said slide in the other direction, and means for moving said slide in said other direction when said spindle is in said predetermined position.

Claim 13

A tool holder for attachment to the spindle of a machine tool having a frame means to align said spindle in a predetermined angular position about its spindle axis, comprising: a body for attachment to said spindle, a tool holding slide mounted on said body and being movable on said body radially with respect to the spindle axis, said slide having a plurality of seats each adapted to house a tool, one said seat being disposed radially and two other said seats being disposed axially in the same diametral plane but at different distances from the axis of said tool holder, locking means engageable with said slide and movable between a normal locked position locking said slide relative to said body and an unlocked position freeing said slide for movement, a pressure actuated operating member engageable with said locking means for moving said locking means to said unlocked position, an abutment fixed to said machine frame and engageable with said operating member, means for moving said operating means into pressure engagement with said abutment when said spindle is in said predetermined angular position to thereby unlock said tool holding slide, and means for displacing said tool holding slide radially with respect to the spindle axis when said tool holding slide is in said unlocked position.

Claim 14

A tool holder for attachment to the spindle of a machine tool having a frame means to align said spindle in a predetermined angular position about its spindle axis, comprising: a body for attachment to said spindle, a tool holding slide mounted on said body and being movable on said body radially with respect to the spindle axis, said slide having a plurality of seats each adapted to house a tool, one said seat being disposed radially and two other said seats being disposed axially in the same diametral plane but at different distances from the axis of said tool holder, locking means engageable with said slide and movable between a normal locked position locking said slide relative to said body and an unlocked position freeing said slide for movement, a pressure actuated operating member engageable with said locking means for moving said locking means to said unlocked position, an abutment fixed to said machine frame and engageable with said operating member, means for moving said operating means into pressure engagement with said abutment when said spindle is in said predetermined angular position to thereby unlock said tool holding slide, and means for displacing said tool holding slide radially with respect to the spindle axis when said tool holding slide is in said unlocked position.