Composite material machining tools

Details Composite material machining tools Composite material machining tools

1998-06-18

2001-03-06

Mai, Ngoclan (Department: 1742)

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

C428S547000, C419S005000, C419S008000, C419S026000

Reexamination Certificate

active

06197431

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to machining tools and, more particularly, to machining tools that can benefit from being constructed out of exotic and expensive metals to improve their performance.
2. Background Information
The prior art method of manufacturing a machining tool, and more particularly, a machining tool that has to operate in a caustic environment, is to begin with bar stock of a material appropriate to withstand the environment, for example, an alloy sold by Crucible Steel known as M-42 or other similar alloys with a desired characteristic known generally as high speed steels, and machine away material as necessary to obtain the desired outer geometry of the cutting tool. This process is very costly since the machining operations are time consuming and involve the removal and waste of a large amount of the original, expensive, bar stock material.
SUMMARY OF THE INVENTION
Accordingly, one object of this invention is to provide a high speed machining tool and process for making the same which is less costly. Another object of this invention is to provide such a tool with improved operating characteristics that match or exceed those of prior art tools. Furthermore, among others, it is an object of this invention to provide such a tool requiring less manufacturing time. These and other objects are accomplished by manufacturing the improved machining tool of this invention from powdered metal which is formed into a preselected shape approximating the desired shape of the machining tool; bonding the powdered-metal in the preselected shape; and machining the preselected shape to achieve the desired machining tool. Preferably, the powdered metal is metallurgically bonded to achieve intergranular adhesion. In addition, it is preferable to employ two or more different types of powdered metals wherein the different metal types are located at predetermined portions of the preselected shape of the rough machining tool work piece with the characteristics of each metal chosen to best meet the demands of the portions of the tool that they are located at.
In one preferred embodiment, the outer machining surface of the tool that interfaces with the work piece is formed from a high speed alloy, e.g., CPM-42 while the interior of the tool and shank is formed from a second alloy having a significantly reduced cost, but exhibiting the necessary properties of ductility, surface hardness and abrasion resistance.


REFERENCES:
patent: 4398952 (1983-08-01), Drake
patent: 4630692 (1986-12-01), Ecer
patent: 4669522 (1987-06-01), Griffin
patent: 4731115 (1988-03-01), Abkowitz et al.
patent: 4852531 (1989-08-01), Abkowitz et al.
patent: 5333520 (1994-08-01), Fischer et al.
Dynamet Technology, Inc., Eight A Street, Burlington, MA,Innovative Engineered Materials-Creative Manufacturing Technology, pp. 1-8.
Dynamet Technology, Inc., Eight A Street, Burlington, MA, P/M Titanium Matrix Compposite: From, War Games to Fun & Games,Titanium '95, vol. III, pp. 2722-2730.

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