US 10,761,497 B2 · Printing 3D objects with automatic dimensional accuracy compensation

Abstract

Techniques are described for improving dimensional accuracy, and more specifically z-axis or vertical dimensional accuracy in generating a 3 dimensional (3D) object comprising a plurality of formable layers. In one example, a height configuration parameter, such as a selected layer height, a print resolution, one or more tolerance values for certain layers or portions of a 3D object to be printed, etc., and a total object height, may be obtained. A first height corresponding to a subset of the plurality of formable layers may be selected based on the received height configuration parameter and the total object height. In some aspects, the first height may include a global layer height for the 3D object. The first height may be selected to optimize accuracy of the height configuration parameter or the total object height.

Claims20

Dependent claims

A system for generating tool-path instructions to produce a three-dimensional (3D) object with high dimensional accuracy, the system comprising:

a processor;
and
a memory comprising instructions that, when executed by the processor, cause the system to:
access a 3D model of the 3D object to be produced, wherein the 3D model comprises at least one feature and a plurality of layers;
determining a height configuration parameter accuracy error;
selecting a global slice layer height based on the height configuration parameter accuracy error, wherein each of the plurality of layers has a global slice layer height;
adjust a layer height of at least one of the plurality of layers based on the feature and a total object height of the 3D model, wherein the adjusted layer height is different from the global slice layer height, and wherein the adjusted layer height is selected to optimize an accuracy of the total object height of the 3D model;
and
generate, based on the global slice layer height and the adjusted layer height, tool-path instructions for use by a device to produce the 3D object.

6 more elements

A computer readable storage device having stored thereon instructions that, upon execution by at least one processor, cause the at least one processor to perform operations for generating tool-path instructions to produce a three dimensional (3D) object, the operations comprising:

accessing a 3D model of the 3D object to be produced, wherein the 3D model comprises at least one feature and a plurality of layers;
determining a height configuration parameter accuracy error;
selecting a global slice layer height based on the height configuration parameter accuracy error, wherein each of the plurality of layers has a global slice layer height;
adjusting a layer height of at least one of the plurality of layers based on the feature and a total object height of the 3D model, wherein the adjusted layer height is different from the global slice layer height, and wherein the adjusted layer height is selected to optimize an accuracy of the total object height of the 3D model;
and
generating, based on the global slice layer height and the adjusted layer height, tool-path instructions for use by a device to produce the 3D object.

3 more elements

Dependencies are inferred from the claim text.

Printing 3D objects with automatic dimensional accuracy compensation

Life of this patent

Printing 3D objects with automatic dimensional accuracy compensation

Life of this patent

Abstract

Claims20