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Methods of Machining Dissimilar Materials

A heterogeneous material, machining technology, applied in metal processing, metal processing equipment, workpieces, etc., can solve problems such as increasing material components

Active Publication Date: 2019-11-19
FORD MOTOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, the weld between the gear and the housing would add another different material composition and / or hardness value

Method used

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  • Methods of Machining Dissimilar Materials
  • Methods of Machining Dissimilar Materials
  • Methods of Machining Dissimilar Materials

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Embodiment Construction

[0034] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0035] refer to figure 1 and figure 2 , shows the housing and sun gear assembly 10 prior to machining. Assembly 10 includes gear 12 and housing 14 with weld 16 connecting gear 12 and housing 14 together. The gear 12 may be case hardened or case hardened such that at least a portion of the gear outer surface 18 has a higher hardness value (eg, Rockwell C (HRC)) than the bulk 20 . A...

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Abstract

Methods of machining a component including multiple dissimilar materials are disclosed. One method may include making a first cut in the component to remove at least a portion of a hardest material in the component and making a second cut in the component along a second cutting-path that does not include the hardest material. The first cut may expose a cut surface in the component and the second cut may extend through the cut surface. The cuts may be made using a turning operation and different cutting tools may be used for the first and second cuts. The hardest material may have a hardness of at least 50 HRC and the remaining materials may have a hardness of at most 45 HRC. The disclosed methods may be used to form a thrust face surface in a shell and sun gear assembly to extend tool life and reduce scrap.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 62 / 119,559, filed February 23, 2015, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present disclosure relates to methods of machining dissimilar materials (eg, materials of different hardness). Background technique [0004] Cutting operations are sometimes required in order to provide or create a flat surface. In the case of housing and sun gear assemblies, this may involve thrust face surface cutting through materials with different properties. For example, the sun gear and the housing may consist of different material compositions and / or their materials have different hardnesses. Additionally, a weld between the gear and housing would add another different material composition and / or hardness value. Cutting, which may be referred to as a thrust face machining operation, may be performed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B1/00
CPCB23B1/00B23B2220/04B23B2222/84B23B2228/24B23B2240/16B23B2260/07
Inventor 帕特里克·拉塞尔·布劳斯布莱恩·斯科特·菲利普斯
Owner FORD MOTOR CO
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