Casting machine stock verification methods and systems

Patent metadata

Field	Value
Publication number	US-10528030-B2
Application number	US-201615181154-A
Country	US
Kind code	B2
Filing date	Jun 13, 2016
Priority date	Jun 13, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

Systems and methods are provided for designing casting and finished component models used to fabricate corresponding casting hardware for a casted component and mechanical components fabricated therefrom. One exemplary method involves identifying a first subset of machined casting surfaces in a casting model of the casted component, identifying a second subset of machined feature surfaces in a finished model of the mechanical component, determining respective machine stock values associated the machined feature surfaces based on distances between the respective machined feature surfaces and the machined casting surfaces, and providing graphical indicia of the respective machine stock values that are influenced by the relationship between the respective machine stock values and a machine stock threshold.

First claim

What is claimed is:

1. A method of designing casting hardware, the method comprising:
filtering, by a processing system, unmodified surfaces in a finished model of a mechanical component from a casting model of a casted component to identify a first subset of surfaces to be machined in the casting model;
identifying, by the processing system, a second subset of machined feature surfaces in the finished model of the mechanical component;
creating a representative casting surface to be machined by combining the first subset of surfaces in the casting model into a unitary surface;
determining, by the processing system, respective machine stock values associated with each machined feature surface of the second subset of machined feature surfaces in the finished model based on a minimum distance between the respective machined feature surface of the second subset and the representative casting surface;
classifying each machined feature surface of the second subset into one of a plurality of classifications based on a relationship between the respective machine stock value associated with the respective machined feature surface and a machine stock threshold, the plurality of classifications including an excess machine stock category and an insufficient machine stock category; and
providing, by the processing system on a display device coupled to the processing system, graphical indicia that the mechanical component may be incapable of being fabricated from the casted component when the respective machine stock value associated with one or more machined feature surfaces of the second subset is less than the machine stock threshold, wherein:
the graphical indicia comprise graphical indicia of the plurality of classifications;
the graphical indicia of the insufficient machine stock category include indicia of the respective one or more machined feature surfaces of the second subset classified into the insufficient machine stock category; and
the graphical indicia of the excess machine stock category include indicia of the respective one or more machined feature surfaces of the second subset classified into the excess machine stock category.

2. The method of claim 1 , further comprising:
identifying a third subset of unmodified surfaces in the finished model, wherein identifying the first subset comprises filtering the third subset of unmodified surfaces from a plurality of surfaces in the casting model to obtain the first subset of surfaces.

3. The method of claim 2 , wherein the filtering comprises:
determining, for each unmodified surface of the third subset, a representative number based on one or more of a surface area of the respective unmodified surface and a center of gravity of the respective unmodified surface;
determining, for each surface of the plurality of surfaces in the casting model, a representative number based on one or more of a surface area of the respective surface and a center of gravity of the respective surface; and
excluding one or more surfaces of the plurality of surfaces in the casting model when representative numbers associated with the one or more surfaces match representative numbers associated with one or more unmodified surfaces of the third subset.

4. The method of claim 1 , wherein providing the graphical indicia comprises rendering one or more of the machined feature surfaces of the second subset using a visually distinguishable characteristic influenced by a relationship between the respective machine stock values associated with the one or more of the machined feature surfaces and the machine stock threshold.

5. The method of claim 1 , wherein providing the graphical indicia comprises generating a user notification when a respective machine stock value associated with one or more of the machined feature surfaces is less than the machine stock threshold.

6. The method of claim 1 , further comprising providing, by the processing system, the casting model to a casting system, wherein the casting system fabricates the casting hardware for the casted component based on the casting model.

7. The method of claim 6 , further comprising providing, by the processing system, the finished model to a machining system, wherein the machining system fabricates the mechanical component from the casted component based on the finished model.

8. A computer-readable medium having instructions stored thereon that are executable by the processing system of a computing device to perform the method of claim 1 .

9. A system comprising:
a display device;
a data storage element to store a finished model of a mechanical component and a casting model of a casted component from which the mechanical component is to be fabricated; and
a processing system coupled to the data storage element and the display device to:
identify a first subset of surfaces to be machined in the casting model by filtering unmodified surfaces in the finished model of the mechanical component from the casting model;
identify a second subset of machined feature surfaces in the finished model;
create a representative casting surface to be machined by combining the first subset of surfaces in the casting model into a unitary surface;
determine respective machine stock values associated with each machined feature surface of the second subset based on a minimum distance between the respective machined feature surface of the second subset and the representative casting surface;
classify each machined feature surface of the second subset into one of a plurality of classifications based on a relationship between the respective machine stock value associated with the respective machined feature surface and a machine stock threshold, the plurality of classifications including an excess machine stock category and an insufficient machine stock category; and
provide graphical indicia of one or more of the respective machine stock values on the display device, wherein the graphical indicia are influenced by a relationship between the one or more of the respective machine stock values and the machine stock threshold to indicate that the mechanical component may be incapable of being fabricated from the casted component when the respective machine stock value associated with one or more machined feature surfaces of the second subset is less than the machine stock threshold, wherein:
the graphical indicia comprise graphical indicia of the plurality of classifications;
the graphical indicia of the insufficient machine stock category include indicia of the respective one or more machined feature surfaces of the second subset classified into the insufficient machine stock category; and
the graphical indicia of the excess machine stock category include indicia of the respective one or more machined feature surfaces of the second subset classified into the excess machine stock category.

10. The system of claim 9 , further comprising a user input device coupled to the processing system, wherein the processing system provides a graphical user interface element on the display device to obtain the machine stock threshold via the user input device.

11. The system of claim 9 , further comprising a casting system coupled to the processing system to receive the casting model and fabricate casting hardware for the casted component based on the casting model.

12. The system of claim 11 , further comprising a machining system coupled to the processing system to receive the finished model and fabricate the mechanical component from the casted component.

13. The system of claim 9 , further comprising a machining system coupled to the processing system to receive the finished model and fabricat

Assignees

• Honeywell Int Inc
• Garrett Transportation I Inc

Inventors

• Thimmegowda Kiran Kumar
• Gattu Raghavendra
• Ananthakrishna Karthik
• S Sujai
• Koneri Raghavendra

Classifications

• G05B19/4097 Primary

  characterised by using design data to control NC machines, e.g. CAD/CAM (G05B19/4093 takes precedence) · CPC title

• B22D46/00

  Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons (controlling or regulating in general G05) · CPC title

• G06F2113/22

  Moulding · CPC title

• G05B2219/35134

  3-D cad-cam · CPC title

• G06F2119/18

  Manufacturability analysis or optimisation for manufacturability · CPC title