Method for estimating error propagation

A method of comprising, for each of a plurality of components to be manufactured, the steps of:

• obtaining a three-dimensional model of a component to be manufactured;
• obtaining a computer program having computer executable code for manufacture of the component based on the three-dimensional model of a component, the computer program including data defining a tool path for a cutting tool;
• providing a first estimated geometry by estimating, based on the computer program, a geometry of the component to be manufactured;
• estimating a first type of deviation as a deviation between the first estimated geometry and a geometry of the component as defined by the three-dimensional model;
• obtaining sensor data captured at a machine during manufacturing of the component by the machine, wherein the manufacturing of the component is based on the computer program;
• estimating, based on machining process characteristics indicated by the sensor data, a second type of deviation as a deviation between a tool path the machine is instructed via said computer program to provide and an actual tool path provided by the machine during the manufacturing of the component;
• computing a deviation of a third type as a deviation between the geometry of the component as defined by the three-dimensional model and a measured actual geometry of the component as manufactured;
• updating an error propagation model based on the estimated deviations and the computed deviations, wherein the error propagation model approximates a relation between the first and third types of deviations, and a relation between the second and third types of deviations;
• obtaining a three-dimensional model of an additional component to be manufactured;
• obtaining a computer program for manufacture of the additional component, the computer program including data defining a tool path for a cutting tool;
• providing an estimated geometry of the additional component by estimating, based on the computer program, a geometry of the additional component to be manufactured;
• estimating a first type of deviation between the estimated geometry of the additional component and a geometry of the additional component as defined by the three-dimensional model of the additional component;
• obtaining additional sensor data captured at a machine during manufacture of the additional component by the machine, wherein the additional component is manufactured by the machine based on the computer program;
• estimating, based on machining process characteristics indicated by the additional sensor data, a second type of deviation as a deviation between a tool path the machine is instructed via the computer program to provide and an actual tool path provided by the machine during manufacture of the additional component;
• and
• estimating, based on the error propagation model and based on the estimated deviations for the additional component, a deviation between the geometry of the additional component as defined by the three-dimensional model and an actual shape of the additional component as manufactured.

A method of comprising, for each of a plurality of components to be manufactured, the steps of:

• obtaining a three-dimensional model of a component to be manufactured;
• obtaining a computer program having computer executable code for manufacture of the component based on the three-dimensional model of a component, the computer program including data defining a tool path for a cutting tool;
• providing a first estimated geometry by estimating, based on the computer program, a geometry of the component to be manufactured;
• estimating a first type of deviation as a deviation between the first estimated geometry and a geometry of the component as defined by the three-dimensional model;
• obtaining sensor data captured at a machine during manufacturing of the component by the machine, wherein the manufacturing of the component is based on the computer program;
• estimating, based on machining process characteristics indicated by the sensor data, a second type of deviation as a deviation between a tool path the machine is instructed via said computer program to provide and an actual tool path provided by the machine during the manufacturing of the component;
• computing a deviation of a third type as a deviation between the geometry of the component as defined by the three-dimensional model and a measured actual geometry of the component as manufactured;
• updating an error propagation model based on the estimated deviations and the computed deviations, wherein the error propagation model approximates a relation between the first and third types of deviations, and a relation between the second and third types of deviations;
• obtaining a three-dimensional model of an additional component to be manufactured;
• obtaining a computer program for manufacture of the additional component, the computer program including data defining a tool path for a cutting tool;
• providing an estimated geometry of the additional component by estimating, based on the computer program, a geometry of the additional component to be manufactured;
• estimating a first type of deviation between the estimated geometry of the additional component and a geometry of the additional component as defined by the three-dimensional model of the additional component;
• obtaining additional sensor data captured at a machine during manufacture of the additional component by the machine, wherein the additional component is manufactured by the machine based on the computer program;
• estimating, based on a machining process characteristic indicated by the additional sensor data, a second type of deviation as a deviation between a tool path the machine is instructed via the computer program to provide and an actual tool path provided by the machine during manufacture of the additional component;
• and
• providing documentation, including the estimated deviations for the additional component, for delivery together with the additional component.

A method comprising, for each of a plurality of components to be manufactured, the steps of:

• obtaining a three-dimensional model of a component to be manufactured;
• obtaining a computer program having computer executable code for manufacture of the component based on the three-dimensional model of a component, the computer program including data defining a tool path for a cutting tool;
• providing a first estimated geometry by estimating, based on the computer program, a geometry of the component to be manufactured;
• estimating a first type of deviation as a deviation between the first estimated geometry and a geometry of the component as defined by the three-dimensional model;
• obtaining sensor data captured at a machine during manufacturing of the component by the machine, wherein the manufacturing of the component is based on the computer program;
• estimating, based on machining process characteristics indicated by the sensor data, a second type of deviation as a deviation between a tool path the machine is instructed via said computer program to provide and an actual tool path provided by the machine during the manufacturing of the component;
• computing a deviation of a third type as a deviation between the geometry of the component as defined by the three-dimensional model and a measured actual geometry of the component as manufactured;
• updating an error propagation model based on the estimated deviations and the computed deviations, wherein the error propagation model approximates a relation between the first and third types of deviations, and a relation between the second and third types of deviations;
• and
• generating, based on the sensor data captured at a machine during manufacturing of a certain component by the machine, control signals for controlling the machine to adjust cutting data already during the manufacture of the certain component.