Machining Process for Trapezoid Rings With Small Axial Dimensions, Used in Pistons of Internal Combustion Engines
AssigneeKS Kolbenschmidt GmbH
InventorsReiner Friede, Denis Beller
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Abstract
A method for producing a piston for internal combustion engines, where the piston includes a circumferential trapezoid annular groove for receiving trapezoid rings with small axial dimensions the groove having a groove base with adjoining surfaces and groove flanks. The groove base with adjoining surfaces is created in a first method step by machining using a cutting steel tool and the groove flanks are created in a further method step. Also disclosed are a piston produced according to the method and a cutting steel tool.
Claims12
A method for producing a piston internal combustion engines, the piston including a circumferential trapezoid annular groove for receiving trapezoid rings with small axial dimensions, the groove having a groove base with adjoining surfaces and groove flanks by creating the groove base with the adjoining surfaces is created in a first method step by machining using a tool steel and creating the groove flanks in a further step.
A tool steel for performing a method of creating a circumferential trapezoidal annular groove in a piston comprising:
- the tool steel has parallel or almost parallel surfaces at an end forming a subsequent groove base.
Dependencies are inferred from the claim text.