Back to results
US 5,429,459 AGranted
Method of and apparatus for thread mill drilling
AssigneeManuel C. Turchan
InventorEdward B. Palm
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeManuel C. Turchan
InventorEdward B. Palm
Estimating the term…
A threaded hole (20) in a workpiece (22) is formed by rapidly spinning an elongated tool (24) having a drill point (64) at one end, at least one longitudinally extending flute (80) having thread milling faces (84) for milling the thread to be formed, and wherein the tool (24) is first moved axially to carry the drill point (64) against and into the workpiece (22) to form a hole (66), then is displaced radially a distance equal to the thread depth to be formed, then is moved orbitally around the hole (66) to mill threads therein, then is displaced back to the center of the hole (20) and then is retracted from the hole (20). To form a helical thread in the hole (20), the tool (24) is shifted axially one thread pitch during the orbital movement. A thread milling drill head (26) is disclosed for chucking the tool (24) and shifting it through the aforesaid movements. Fluid flow may be induced into the hole (66a) to entrain the waste or fines and carry such out of the hole, and for this purpose a passageway (100) connects to a source (111) of fluid pressure with a turbine blade assembly (110) mounted on the tool (24a ).
A hole making and grooving tool for use in a machine tool which is adapted to simultaneously rotate a cutting tool about its axis and feed said cutting tool axially for cutting a hole in an imperforate surface of a solid portion of a workpiece and thereafter concurrently move said axis axially and orbitally to form a groove in the wall of said hole, said hole making and grooving tool comprising:
A hole making and grooving tool for use in a machine tool which is adapted to simultaneously rotate a cutting tool about its axis and feed said cutting tool axially for cutting a hole in an imperforate surface of a solid portion of a workpiece and thereafter concurrently move said axis axially and orbitally to form a groove in said wall of said hole, said hole making and grooving tool comprising:
A method of making a grooved hole in an imperforate surface of a solid portion of a workpiece comprising the steps of:
A method of making a grooved hole in an imperforate surface of a solid portion of a workpiece comprising the steps of:
A groove mill drill tool for making at least one grooved hole in an imperforate surface of a solid portion of a workpiece comprising:
A hole making and grooving tool for use in a machine tool which is adapted to simultaneously rotate a cutting tool about its axis, move said cutting tool axially to form a hole in an imperforate surface of a solid portion of a workpiece without interference with the wall of said hole, and thereafter concurrently move said axis axially and orbitally to form a groove, said tool comprising:
A hole making and grooving tool for use in a machine tool which is adapted to simultaneously rotate a cutting tool about its axis, move said tool axially to form a hole in an imperforate surface of a solid portion of a workpiece, move said cutting tool radially, and thereafter concurrently move said axis axially and orbitally to form a groove, said tool comprising:
A hole making and grooving tool for use in a machine tool which is adapted to simultaneously rotate a cutting tool about its axis, move said cutting tool axially to form a hole in an imperforate surface of a solid portion of a workpiece and thereafter move said axis in an orbital path, said tool comprising:
Dependencies are inferred from the claim text.