Invention Grant
- Patent Title: Method for forming center link of connecting rod for variable displacement engine
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Application No.: US16808567Application Date: 2020-03-04
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Publication No.: US11376662B2Publication Date: 2022-07-05
- Inventor: Dejian Yan , Edwin Wen-Wei Zung
- Applicant: METALDYNE, LLC
- Applicant Address: US MI Detroit
- Assignee: METALDYNE, LLC
- Current Assignee: METALDYNE, LLC
- Current Assignee Address: US MI Detroit
- Agency: Burris Law, PLLC
- Main IPC: B22F5/00
- IPC: B22F5/00 ; F16C7/02 ; B22F3/17 ; B22F3/24

Abstract:
A method includes powder forging and machining a workpiece that is fractured to divide the workpiece into separate components. In a green form in which the workpiece is formed of compacted powdered metal and has a body that is generally shaped as a parallelepiped with a pair of end faces. The body defines a bore, a pair of V-notches and a pair of channels. The V-notches are formed into the bore parallel to the central axis of the bore and cooperate to define a separation plane. Each of the channels is formed in an associated one of the end faces at a location where the separation plane intersects the end face. During forging, the channels are closed but create a stress riser that aids in directing the fracture when the components are separated from one another.
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