Apparatus for creating a turning program

A turning program creation apparatus for creating a finish machining program, comprising:

• a machining element identification means for identifying a machining element from machined shape data;
• a cutting direction determination means for automatically determining a direction in which to cut a workpiece on the basis of a feature of the machining element identified by the machining element identification means;
• and
• a program creation means for creating a machining program that cuts in the direction determined by the cutting direction determination means,
• wherein when the machining element identified by the machining element identification means from the machined shape data is a straight line element, the cutting direction determination means obtains a distance between a start point and an end point of the straight line element in a direction orthogonal to an axis of rotation of the workpiece, compares the obtained distance with a preset value, and, if the distance is greater than the preset value, changes the cutting direction from a profile direction to a direction from a rim toward a center of the workpiece.

A turning program creation apparatus for creating a finish machining program, comprising:

• a machining element identification means for identifying a machining element from machined shape data;
• a cutting direction determination means for automatically determining a direction in which to cut a workpiece on the basis of a feature of the machining element identified by the machining element identification means;
• and
• a program creation means for creating a machining program that cuts in the direction determined by the cutting direction determination means,
• wherein when the machining element identified by the machining element identification means from the machined shape data is an arc element, the cutting direction determination means compares an angle that a straight line between a start point and an end point of the arc element makes with an axis of rotation of the workpiece with a preset angle and, if the angle made by the arc element is greater than the preset angle, changes the cutting direction from a profile direction to a direction from a rim toward a center of the workpiece.

A turning program creation apparatus for creating a finish machining program, comprising:

• a machining element identification means for identifying a machining element from machined shape data;
• a cutting direction determination means for automatically determining a direction in which to cut a workpiece on the basis of a feature of the machining element identified by the machining element identification means;
• and
• a program creation means for creating a machining program that cuts in the direction determined by the cutting direction determination means,
• wherein when the machining element identified by the machining element identification means from the machined shape data is an arc element, the cutting direction determination means compares a radius of the arc element with a preset value and, if the radius is greater than the preset value, changes the cutting direction from a profile direction to a direction from a rim toward a center of the workpiece.

A turning program creation apparatus for creating a finish machining program, comprising:

• a machining element identification means for identifying a machining element from machined shape data;
• a cutting direction determination means for automatically determining a direction in which to cut a workpiece on the basis of a feature of the machining element identified by the machining element identification means;
• and
• a program creation means for creating a machining program that cuts in the direction determined by the cutting direction determination means,
• wherein when the machining element identified by the machining element identification means from the machined shape data is a straight line element, if an angle that the straight line element makes with a axis of rotation of the workpiece is greater than a preset angle and a distance between a start point and an end point of the straight line element in a direction orthogonal to an axis of rotation of the workpiece is greater than a preset distance, the cutting direction determination means changes the cutting direction from a profile direction to a direction from a rim toward a center of the workpiece.

A turning program creation apparatus for creating a finish machining program, comprising:

• a machining element identification means for identifying a machining element from machined shape data;
• a cutting direction determination means for automatically determining a direction in which to cut a workpiece on the basis of a feature of the machining element identified by the machining element identification means;
• and
• a program creation means for creating a machining program that cuts in the direction determined by the cutting direction determination means,
• wherein when a machining element identified by the machining element identification means from the machined shape data is an arc element, if an angle that a straight line between a start point and an end point of the arc element makes with an axis of rotation of the workpiece is greater than a preset angle and a radius of the arc element is greater than a preset value, the cutting direction determination means changes the cutting direction from a profile direction to a direction from a rim toward a center of the workpiece.