Linear broach machining system
AssigneeThe Crankshaft Machine Group, a division of Avis Industrial Corp.
InventorKevin J. Glaspie
Life of this patent
Estimating the term…
Abstract
A linear broaching machine for machining rotating parts wherein a plurality of tooling carriages are mounted upon a moving chain and broach type tools are supported by the carriages wherein the tools are moved in a linear path into engagement with a rotating workpiece to remove metal from the workpiece and form an accurately sized cylindrical surface concentric to the workpiece axis of rotation. The tool carriages are spaced from each other providing non-machining access durations wherein the workpiece may be loaded or unloaded from its rotating support spindles.
Claims8
A linear broaching method for machining continuously rotating workpieces chucked within a machine comprising the steps of
- continuously rotating one of said workpieces about an axis of rotation during machining,
- linearly sequentially moving a plurality of spaced broaching tools mounted on an endless member substantially tangentially to the workpiece in a path transverse to said axis to define a linear broach tool cutting paths,
- engaging one of said tools with the workpiece whereby said one tool removes metal from the workpiece,
- and either removing the workpiece from the machine or inserting a new workpiece into the machine to be machined by the spaced broaching tools, said removing or inserting occurring during the linear sequential moving of the spaced broaching tools.
A linear broaching machine for machining continuously rotating workpieces comprising, in combination, a frame, a continuously rotatable headstock and a tailstock mounted on said frame defining an axis of continuous rotation and each having workpiece holding means, a linear bedway defined on said frame adjacent and substantially perpendicularly disposed to said axis of rotation and having first and second ends, first and second sprockets rotatably mounted on said frame, said first and second sprockets being located adjacent said bedway first and second ends, respectively, drive means drivingly connected to at least one of said sprockets, an endless flexible tension member passing over said sprockets, said tension member always having a portion extending adjacent and substantially parallel to said bedway, a plurality of spaced tool carriers mounted upon said tension member sequentially engaging and moving along the length of said bedway, a broaching tool mounted on selected ones of the carriers, said broaching tools sequentially substantially tangentially engaging a rotating workpiece mounted upon said headstock and tailstock while the associated carrier is engaging and moving along said bedway to remove metal from the workpiece.
Dependencies are inferred from the claim text.