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US 4,543,020 AGranted
Method of manufacturing large gears
AssigneeUSM Corporation
InventorBoris A. Shtipelman
Life of this patent
Estimating the term…
Abstract
A method of manufacturing large gears by performing all steps required on a single vertical boring mill without removing the gear blank from the rotary table of the mill.
Claims4
A method of manufacturing large gears on a vertical boring mill having a single machining center axis about which a rotary table rotates including the steps of:
- securing an unmachined unitry large gear blank centered on the rotary table of said boring mill for rotation about said axis, turning the concentric surfaces and faces of the secured blank by movement of a tool relative to said table during rotation thereof, to form a finished gear blank, machining mounting holes and surfaces on the finished gear blank which remains secured to said table;
- and forming the gear teeth on the finished blank which remains secured to said table.
A method of manufacturing large gears from multi-part blanks on a large vertical boring mill having a single machining center axis about which a rotary table rotates including the steps of:
- assembling and securing all parts of the blank in aligned and spaced relation on the rotary table of the boring mill, machining the joining surfaces and connecting holes on each part of the blank while secured to the table, assembling the parts together to form a unitary blank without removal from the table, centering and securing the unitary blank on the table for rotation about said axis, turning the concentric surfaces and faces of the secured unitary blank, while secured to the table, by movement of a tool relative to said table during rotation thereof, machining mounting and locating holes and surfaces on the blank while remaining secured to the table, and forming the gear teeth on the finished unitary blank while remaining secured to the table.
Dependencies are inferred from the claim text.