Cutting tool for machining fiber composite materials

A milling tool for machining fiber composite materials, the milling tool comprising:

• a clamping section and a cutting edge section extending along a longitudinal axis;
• said cutting edge section having a basic cylindrical shape;
• said cutting edge section having formed thereon a plurality of first chip flutes, formed as left-facing spirals, and a plurality of second chip flutes, formed as right-facing spirals, and wherein a plurality of discrete cutting elements are formed on said cutting edge section by way of intersecting said first and second chip flutes;
• said cutting elements having a first circumferential cutting edge running along a left-facing spiral and a second circumferential cutting edge running along a right-facing spiral, each extending along a common enveloping cylindrical surface that defines an outer circumference of said cutting edge section, and wherein said first and second circumferential cutting edges terminate in a common tip;
• at least a partial quantity of said plurality of cutting elements having a first primary clearance surface adjoining said first circumferential cutting edge in a circumferential direction and a second primary clearance surface adjoining said second circumferential cutting edge in the circumferential direction;
• said first primary clearance surface extending at a first primary clearance angle and said second primary clearance surface extending at a second primary clearance angle, and said first and second primary clearance surfaces adjoining one another along a first clearance surface edge;
• and
• a width of said primary clearance surfaces being between 0.040 times and 0.110 times a tool diameter of the milling tool.

A milling tool for machining fiber composite materials, the milling tool comprising:

• a clamping section and a cutting edge section extending along a longitudinal axis;
• said cutting edge section having a basic cylindrical shape;
• said cutting edge section having formed thereon a plurality of first chip flutes, formed as left-facing spirals, and a plurality of second chip flutes, formed as right-facing spirals, and wherein a plurality of discrete cutting elements are formed on said cutting edge section by way of intersecting said first and second chip flutes;
• said cutting elements having a first circumferential cutting edge running along a left-facing spiral and a second circumferential cutting edge running along a right-facing spiral, each extending along a common enveloping cylindrical surface that defines an outer circumference of said cutting edge section, and wherein said first and second circumferential cutting edges terminate in a common tip;
• at least a partial quantity of said plurality of cutting elements having a first primary clearance surface adjoining said first circumferential cutting edge in a circumferential direction and a second primary clearance surface adjoining said second circumferential cutting edge in the circumferential direction;
• said first primary clearance surface extending at a first primary clearance angle and said second primary clearance surface extending at a second primary clearance angle, and said first and second primary clearance surfaces adjoining one another along a first clearance surface edge;
• and
• a width of a first peripheral cutting edge being greater than a width of a second peripheral cutting edge and a ratio between the widths lies between 1.1 and 1.5.

A milling tool for machining fiber composite materials, the milling tool comprising:

• a clamping section and a cutting edge section extending along a longitudinal axis;
• said cutting edge section having a basic cylindrical shape;
• said cutting edge section having formed thereon a plurality of first chip flutes, formed as left-facing spirals, and a plurality of second chip flutes, formed as right-facing spirals, and wherein a plurality of discrete cutting elements are formed on said cutting edge section by way of intersecting said first and second chip flutes;
• said cutting elements having a first circumferential cutting edge running along a left-facing spiral and a second circumferential cutting edge running along a right-facing spiral, each extending along a common enveloping cylindrical surface that defines an outer circumference of said cutting edge section, and wherein said first and second circumferential cutting edges terminate in a common tip;
• at least a partial quantity of said plurality of cutting elements having a first primary clearance surface adjoining said first circumferential cutting edge in a circumferential direction and a second primary clearance surface adjoining said second circumferential cutting edge in the circumferential direction;
• said first primary clearance surface extending at a first primary clearance angle and said second primary clearance surface extending at a second primary clearance angle, and said first and second primary clearance surfaces adjoining one another along a first clearance surface edge;
• and
• a first internal angle of a cutting element facing in the longitudinal direction being smaller than a second internal angle of a cutting element facing in the circumferential direction.

A milling tool for machining fiber composite materials, the milling tool comprising:

• a clamping section and a cutting edge section extending along a longitudinal axis;
• said cutting edge section having a basic cylindrical shape;
• said cutting edge section having formed thereon a plurality of first chip flutes, formed as left-facing spirals, and a plurality of second chip flutes, formed as right-facing spirals, and wherein a plurality of discrete cutting elements are formed on said cutting edge section by way of intersecting said first and second chip flutes;
• said cutting elements having a first circumferential cutting edge running along a left-facing spiral and a second circumferential cutting edge running along a right-facing spiral, each extending along a common enveloping cylindrical surface that defines an outer circumference of said cutting edge section, and wherein said first and second circumferential cutting edges terminate in a common tip;
• at least a partial quantity of said plurality of cutting elements having a first primary clearance surface adjoining said first circumferential cutting edge in a circumferential direction and a second primary clearance surface adjoining said second circumferential cutting edge in the circumferential direction;
• said first primary clearance surface extending at a first primary clearance angle and said second primary clearance surface extending at a second primary clearance angle, and said first and second primary clearance surfaces adjoining one another along a first clearance surface edge;
• and
• a width of said left-facing first chip flutes being smaller than a width of said right-facing second chip flutes and a ratio between the widths of said chip flutes lies between 1.2 and 3.0.