Strengthening by machining
AssigneeUnited Technologies Corporation
InventorChangsheng Guo
Life of this patent
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Abstract
A machining method comprises selecting a finished surface dimension and a material property for a working surface, defining a working temperature range based on the selected material property, and defining a machining power based on the working temperature range. The machining power depends on a removal rate and a specific heat of the working surface. The working surface is machined at the removal rate to achieve the finished surface dimension, and the machine power is controlled to maintain the working surface within the working temperature range. The working surface is heated or cooled from the working temperature range to a transition temperature range, such that the selected material property is preserved in the working surface.
Claims20
A machining method comprising:
- selecting a finished surface dimension for a working surface;
- selecting a material property for the working surface;
- defining a working temperature range based on the selected material property;
- defining a machining power for the working surface based on the working temperature range, wherein the machining power depends on a removal rate and a specific energy of the working surface;
- machining the working surface at the removal rate to achieve the finished surface dimension;
- controlling the machining power to maintain the working surface within the working temperature range;
- and
- heating or cooling the working surface from the working temperature range to a transition temperature range, such that the selected material property is preserved in the working surface.
A method for machining a working surface on a material, the method comprising:
- selecting a finished surface dimension for the working surface;
- defining a cutting depth for the working surface, based on the finished surface dimension;
- selecting a material property for the working surface;
- defining a working temperature range for the working surface based on the selected material property;
- defining a machining power for the working surface based on the working temperature range, wherein the machining power depends on a removal rate and a specific energy of the material;
- machining the working surface at the machining power to achieve the finished surface dimension at the cutting depth;
- controlling the machining power to maintain the working surface within the working temperature range;
- and
- heating or cooling the working surface from the working temperature range to a transition temperature range, such that the desired material property is preserved in the working surface.
A single-pass machining method, the method comprising:
- selecting a finished surface dimension for a working surface of a material;
- defining a cutting depth based on the finished surface dimension;
- selecting a material property for the working surface;
- defining a working temperature range for the working surface based on the selected material property;
- defining a machining power for the working surface based on the working temperature range, wherein the machining power depends on a removal rate and a specific energy of the material;
- machining the working surface at the machining power to achieve the finished surface dimension on the working surface at the cutting depth;
- controlling the machining power to maintain the working surface within the working temperature range and to achieve the finished surface dimension in a single pass over the working surface;
- and
- heating or cooling the working surface from the working temperature range to a transition temperature range, such that the selected material property is preserved in the working surface.
Dependencies are inferred from the claim text.