Method and apparatus for machining work by cutting tool
AssigneeToshiba Kikai Kabushiki Kaisha
InventorShozo Suzuki
Life of this patent
Estimating the term…
Abstract
In the machine tool according to the present invention, a cutting tool 25 is configured to be optionally turned to take each reverse orientation, based on a C axis as the center of rotation about the Z axis, which is vertical to the X-Y plane parallel to a top face of a work 13. First, the orientation of the cutting tool 25 is set to correspond to machining in an advancing stroke for the work 13, so as to perform the machining for the work while moving it in an advancing direction. Then, the orientation of the cutting tool is reversed, so as to perform the machining for the work while moving it in a retracting direction.
Claims20
A method for machining a surface of a work with a cutting tool, by utilizing an reciprocating movement consisting of an advancing stroke for relative movement in one direction and a retracting stroke for relative movement in the reverse direction to the advancing stroke, in the same plane, between the cutting tool and the work, the method comprising the steps of:
- providing a machining tool including a spindle having an axis vertical to the plane, as a center of rotation, and attaching the cutting tool to the spindle;
- setting the orientation of a cutting edge of the cutting tool in a direction that enables the work to be machined in an advancing stroke, in which the work is advanced relative to the cutting tool;
- machining the work, in the advancing stroke, by using the cutting tool;
- turning the cutting tool reversely, by 180°, upon completion of the advancing stroke, so as to set the orientation of the cutting edge of the cutting tool in a direction that enables the work to be machined in a retracting stroke, in which the work is retracted relative to the cutting tool;
- shifting the cutting tool in a direction vertical to the reciprocating directions of the work so as to locate the cutting tool in a next machining position;
- and
- machining the work by using the cutting tool in the retracting stroke.
A method for machining a surface of a work with a cutting tool, by utilizing an reciprocating movement consisting of an advancing movement stroke for relative movement in one direction and a retracting stroke for relative movement in the reverse direction to the advancing movement, in the same plane, between the cutting tool and the work, the method comprising the steps of:
- providing a machining tool having an index head, the index head including a rotation shaft having an axis parallel to the plane, as a center of rotation, and adapted to index at least two cutting tools, one after another, by utilizing the rotation of the rotation shaft, and attaching the at least two cutting tools to the index head, the at least two cutting tools being in a relation to have reverse directions, to one another, for cutting operation, so that the work can be machined in both of the advancing and retracting strokes for the work;
- indexing one cutting tool of the plurality of cutting tools to take a machining position by utilizing the rotation of the rotation shaft, so as to cause a cutting edge of the one cutting tool to be oriented in a direction that enables the work to be machined in an advancing stroke, in which the work is advanced relative to the one cutting tool;
- machining the surface of the work, in the advancing stroke, by using the one cutting tool having been indexed in the machining position;
- indexing the other cutting tool to take a machining position by utilizing the rotation of the rotation shaft, upon completion of the advancing stroke, so as to cause a cutting edge of the other cutting tool to be oriented in a direction that enables the work to be machined in a retracting stroke, in which the work is retracted relative to the other cutting tool;
- shifting the other cutting tool in a direction vertical to the reciprocating directions of the work so as to locate the other cutting tool in a next machining position;
- and
- machining the surface of the work, in the retracting stroke, by using the other cutting tool having been indexed in the next machining position.
An apparatus for machining a surface of a work, while reciprocating the work on a plane relative to a cutting tool, the apparatus comprising:
- a bed;
- a work table, which is located on the bed, configured to be optionally moved, on a horizontal plane, in one direction (X axis), and adapted for placing the work thereon;
- a pair of columns positioned on both of the left and right sides of the bed;
- a cross rail provided across the columns;
- a saddle, which is mounted on the cross rail, and configured to be optionally moved, on the horizontal plane, in a direction (Y axis) vertical to the transfer direction of the work table;
- a lifting table, which is mounted on the saddle, and configured to be optionally moved in the upward and downward directions (Z axis);
- and
- a cutting tool turn table, which is attached to the lifting table, and includes a C axis adapted for turning a cutting edge of the cutting tool about the Z axis to reverse the orientation of the cutting edge, while holding the cutting tool.
An apparatus for machining a surface of a work, while reciprocating the work on a plane relative to a cutting tool, the apparatus comprising:
- a bed;
- a work table, which is located on the bed, configured to be optionally moved, on a horizontal plane, in one direction (X axis), and adapted for placing the work thereon;
- a pair of columns positioned on both of the left and right sides of the bed;
- a cross rail provided across the columns;
- a saddle, which is mounted on the cross rail, and configured to be optionally moved, on the horizontal plane, in a direction (Y axis) vertical to the transfer direction of the work table;
- a lifting table, which is mounted on the saddle, and configured to be optionally moved in the upward and downward directions (Z axis);
- and
- a cutting tool indexing table attached to the lifting table and adapted to hold at least two cutting tools, the at least two cutting tools being in a relation to have reverse directions for cutting, wherein the cutting tool indexing table includes an A axis adapted to index two cutting tools, one after another, such that the work can be machined in both of advancing and retracting strokes for the work.
Dependencies are inferred from the claim text.